User:Tonygameman/Capcom Rivalries

Nintendo

 * Mario = Ryu
 * Luigi = Frank West
 * Infernape = Ken Masters
 * Wii Fit Trainer = Chun-Li
 * Bowser = M. Bison
 * Yoshi = Regina
 * Wario = Ruby Heart
 * Waluigi = Dan Hibiki
 * Donkey Kong = Mike Haggar
 * Diddy Kong = Cody Travers
 * Dixie Kong = Sakura Kasugano
 * Goku (YuYuki) = SonSon III
 * King K. Rool = E. Honda
 * Link = Dante
 * Zelda = Tessa
 * Midna = Hsien-Ko
 * Ganondorf = Scion (Red Earth)
 * Kirby = Classic Mega Man
 * Shulk = Marino (Mega Man X)
 * Sheik = Monster Hunter
 * Rex = Mega Man X
 * Pyra/Mythra = Steel Massimo
 * Samus Aran = Saki Omokane
 * Ridley = Nemesis T-Type
 * Mr. Game & Watch = Servbot
 * Peach = June Lin Milliam
 * Meta Knight = Zero
 * Pikachu = Amaterasu
 * Machamp = Valgas
 * Incineroar = Alex
 * Greninja = Strider Hiryu
 * Mewtwo = Akuma
 * Captain Falcon = Captain Commando
 * Blood Falcon = Kage
 * Black Shadow = Jedah Dohma
 * Sakura Samurai = Date Masamune
 * Vaati = Demitri Maximoff
 * Pit = Morrigan Aensland
 * Palutena = Ingrid
 * Jigglypuff = Felicia
 * Villager = Baby Bonnie Hood
 * Samurai Goroh = Bishamon
 * Wolf O' Donnell = Jon Talbain
 * Fox McCloud = Chris Redfield
 * Falco Lombardi = Leon S. Kennedy
 * Alexandra Roivas = Claire Redfield
 * Sturm (Advance Wars) = Albert Wesker
 * Andy (Advance Wars) = Chuck Greene
 * Sami = Jill Valentine
 * Ness = Sissel (Ghost Trick)
 * Marth = The Arisen (Dragon's Dogma)
 * Ike = Kaijin no Soki
 * Lyn = Linn Kurosawa
 * Robin = Vergil
 * Chrom = Maximo
 * Corrin = Nero
 * Byleth Eisner = Lady
 * Olimar = Sir Arthur
 * Dragaux (Ring Fit Adventure) = Firebrand
 * Little Mac = Batsu Ichimonji
 * Bernadetta von Varley = Ran Hibiki
 * Mach Rider = Akira Kazama
 * Lucas = Menat
 * Ice Climbers = Zack & Wiki
 * Takamaru = Yukimura Sanada
 * Min Min = Dhalsim (uses both kicks and stretching arms)
 * Spring Man = Nathan "Rad" Spencer
 * Isaac = Ryu (Breath of Fire)
 * Krystal = Nina (Breath of Fire)
 * Saki Amamiya = Hayato Kanzaki
 * Inkling = Cinnamon (Mega Man X)
 * Octoling = C. Viper (secret agents dressed in black)
 * Wonder Red = Viewtiful Joe
 * Moltres = Asura
 * Akira Howard/Legionis = Jin Saotome
 * Mike Anderson (Battle Clash; w/ ST Falcon) = Wayne Holden (w/ PTX-40A)
 * Henry Fleming = Edward Falcon
 * Impa = Rouge
 * Raymond Bryce = Ethan Winters
 * Lip (Panel de Pon) = Pure & Fur
 * Mike Jones (StarTropics) = Momotaro (Pirate Ship Higemaru)
 * Star Man (Pro Wrestling) = Biff Slamkovich
 * Ayumi Tachibana = Phoenix Wright
 * Mumkhar = Vega

Guests

 * Banjo & Kazooie (Banjo-Kazooie; Nintendo side)
 * Pac-Man (Nintendo side)
 * Jin Kazama (Tekken; Nintendo side)
 * Cloud Strife (Final Fantasy; Nintendo side)
 * Larcen Tyler (Eternal Champions; Capcom side)
 * Sonic the Hedgehog (Capcom side)
 * Terry Bogard (Fatal Fury; Capcom side)
 * Athena Asamiya (King of Fighters; Capcom side)

Microsoft vs. Capcom

 * Ryu = Jago
 * Ken = Kim Wu
 * Chun-Li = Black Orchid
 * Balrog = T.J. Combo
 * Mega Man X = Master Chief
 * Axl = Commander Jaxon
 * Zero = The Arbiter
 * Sigma = Fulgore
 * Dante = Hero of Oakvale (Fable)
 * Rouge = Theresa
 * Chris Redfield = Doom Slayer
 * Leon Scott Kennedy = Marcus Fenix
 * Jill Valentine = Kait Diaz
 * HUNK = General RAAM
 * Wayne Holden (Lost Planet) = The Agent (Crackdown)
 * Sir Arthur = Steve (Minecraft)
 * Kaijin no Soki = Marius Titus (Ryse: Son of Rome)
 * Yukimura Sanada = Azurik (Azurik: Rise of Perathia)
 * Samanosuke Akechi = Kaim Argonar (Lost Odyssey)
 * Linn Kurosawa = Hawk (Brute Force; other characters such as Brutus appear as assists)
 * Monster Hunter = Jack of Blades (Fable)
 * Felyne (Monster Hunter) = Blinx (Blinx the Time Sweeper)
 * Captain Commando = Captain Smiley (Comic Jumper)
 * Billy Bob (GunSmoke) = The Gunstringer
 * Nina = Inphyy (Ninety Nine Nights)
 * The Arisen (Dragon's Dogma) = Dovahkiin/The Dragonborn
 * Jin Saotome = The Sole Survivor (Fallout 4; w/ Dogmeat)
 * Servbot = Vault Boy
 * Asura = Cinder (Killer Instinct)
 * Nemesis T-Type = Cyberdemon (some of its moves involve summoning other demons)
 * Nathan "Rad" Spencer = William "B.J." Blazkowicz (Wolfenstein)
 * Ryu (Breath of Fire) = Shu (Blue Dragon)
 * Viewtiful Joe = Rash (Battletoads)
 * Zack & Wiki = Banjo & Kazooie
 * Tessa = Gruntilda Winkybunion
 * Regina = Joanna Dark
 * Classic Mega Man (w/ Rush) = Juno (Jet Force Gemini) (w/ Lupus; Vela appear as his alternate costume and designs would be modernized)
 * Proto Man = Ranger (Quake)
 * Frank West = Conker
 * Nick Ramos = Cooper Chance (Grabbed by the Ghoulies)
 * Amaterasu = Kameo
 * Mai-Ling = Alexine
 * Tessa (Red Earth) = Kuros (Wizards & Warriors)
 * Don & Pull (Three Wonders) = Ori (w/ Sein)
 * Trish = Dust (Dust: An Elysian Tail)
 * Raymond Bryce = Alan Wake
 * Lord Miraak = Scion (Red Earth)
 * TBD = Edward Bilstein

Guests

 * Sam Fisher (Splinter Cell)
 * Commander Shepard (Mass Effect)
 * Sonic the Hedgehog
 * Lara Croft (Tomb Raider; Rise of the Tomb Raider was a timed Xbox-exclusive)

PlayStation/Sony

 * Cole MacGrath (with some of his moves from Street Fighter X Tekken) = Ryu
 * Kessler = Akuma
 * Dart Feld = Dante (similarities)
 * Delsin Rowe = Batsu Ichimonji
 * Kat & Dusty = Chun-Li
 * Nathan Drake = Leon S. Kennedy
 * Kratos = Asura
 * Nariko = Morrigan Aensland
 * Aloy = Monster Hunter
 * Wander = Axl
 * Jin Sakai = Kaijin no Soki
 * Ethan Mars (Heavy Rain) = Ethan Winters (Resident Evil 7: Biohazard/Village)
 * Daedalus (Chimeran Leader; Resistance) = Nemesis T-Type
 * Joel & Ellie = Frank West
 * Sweet Tooth = Adam MacIntyre
 * Slayer of Demons = Sir Arthur (both are knights, who fought against demons and originated from extremely hard games)
 * Emmett Graves = Nathan "Rad" Spencer
 * Colonel Radec = Joseph "Super Joe" Gibson
 * Knack = Anarkis
 * Sackboy = Amaterasu
 * Ratchet & Clank = Classic Mega Man
 * Rivet (Rift Apart) = Roll
 * Doctor Nefarious = Dr. Wily (on his Wily Capsule)
 * Sly Cooper = Strider Hiryu
 * Jak & Daxter = Zero
 * Sir Daniel Fortesque = Maximo (heroic knights who are resurrected from the dead and are related to skeletons; Dan being one himself and Maximo being accompanied with Grim, a Grim Reaper itself)
 * Pursuit Force Commander = Jill Valentine
 * Jodie Holmes = Fiona Belli
 * Spike = Zack & Wiki
 * PaRappa = Viewtiful Joe
 * Toro Inoue = Edward Falcon
 * Robbit (Jumping Flash!) = Mega Man X
 * Toan = Gene
 * Gabriel Logan = Chris Redfield
 * Minamoto no Yoshitsune (Genji) = Samanosuke Akechi
 * Gran Turismo Driver = Captain Commando
 * Buzz (Buzz!) = Phoenix Wright (joke fighters)
 * Emperor Nefarious = Edward Bilstein
 * Polygon Man = Pyron (final bosses)

Guests

 * Crash Bandicoot
 * Cloud Strife (Final Fantasy)
 * Sonic the Hedgehog
 * Spyro the Dragon

Sega/Atlus

 * Sonic = Classic Mega Man
 * Pulseman = Mega Man X
 * Knuckles = Proto Man
 * Tails = Rush (with Beat & Eddie as assist characters)
 * Shadow = Bass
 * Ethan Waber = Zero
 * Amy Rose = Roll
 * Dr. Eggman = Dr. Wily
 * Silver = Axl
 * Bark = Sasquatch
 * Akira Yuki = Ryu
 * Sarah Bryant = Cammy White
 * Jacky Bryant = Ken Masters
 * Pai Chan = Chun-Li
 * Shun Di = Gen
 * Wolf Hawkfield = Alex
 * Big the Cat = Rufus
 * Dural = M. Bison/Akuma
 * Kazuma Kiryu = = Dan Smith (Killer7)
 * Goro Majima = Vergil
 * Takayuki Yagami = Phoenix Wright
 * Ryo Hazuki/Bahn = Batsu Ichimonji/Ryu or Ko (Avengers)
 * Bayonetta = Dante
 * Jeanne = Trish
 * Akira Kurusu (Ren Amamiya)/Joker = Vergil
 * Zephyr = Lady
 * BD Joe = Frank West
 * Jack Cayman = Chuck Greene
 * Sam Gideon = Lonely Astronaut (Section Z)
 * Axel Stone = Cody Travers
 * Max Thunder = Mike Haggar
 * Shiva = Guy
 * Nagi Hojo = Maki
 * Green Mask (Pro Wrestling) = The Great Oni
 * Raxel = Lord Raptor
 * NiGHTS = Morrigan
 * Larcen Tyler = B.B. Hood
 * Amitie = Lilith
 * Agent G = Chris Redfield
 * Michael Hardy (Virtua Cop) = Leon S. Kennedy
 * Magician = Nemesis T-Type
 * Hierophant = Hydron
 * Cyborg George Washington (Empire: Total War) = Albert Wesker
 * John Mayor (Deep Fear) = Regina
 * Beat = Yun/Shiba (Cannon Spike)/Con Smith (Killer7)
 * Ulala = Felicia/June (Star Gladiator)
 * Larcen Tyler/Nino (Aztec Adventure) = Edward Falcon
 * Arle Nadja = Pure & Fur
 * Midknight = Jedah/Demitri Maximoff
 * Shadow (Eternal Champions) = Ibuki
 * Xavier = Tessa
 * Gilius Thunderhead/Wonder Boy = Sir Arthur/Maximo
 * Ax Battler = Leo (Red Earth)
 * Tyris Flare = Michelle Heart
 * Death Adder = Black Tiger
 * Max (Shining Force) = Ryu (Breath of Fire)
 * Nei = Katt
 * Centurion = Amaterasu
 * Billy Hatcher = Momotaro (Pirate Ship Higemaru)
 * AiAi = Zack & Wiki
 * Chie Satonaka = Makoto (Street Fighter)
 * Alex Kidd = SonSon
 * Sticks the Badger = Elena (Street Fighter)
 * Headdy = Lou (Three Wonders)
 * Sketch Turner/Kid Chameleon/Bug = Viewtiful Joe
 * Taro Yamada (Rent-A-Hero)/Segata Sanshiro = Captain Commando
 * Joe Musashi = Strider Hiryu
 * Hotsuma = Kenji (Red Earth)
 * Mephiles the Dark = Scion (Red Earth)
 * Zeed = Anakaris
 * Opa-Opa = Super Ace (1942)
 * F-14 Tomcat (After Burner) = F/A-18 Hornet (Carrier Air Wing)
 * Space Harrier = Unknown Soldier (Forgotten Worlds)
 * Gunstar Red = Saki Omokane/Jin Saotome
 * Duke Oda = Mobilesuit (Side Arms)
 * Alis Landale/Hunter (Phantasy Star Online 2) = Monster Hunter
 * Rolf = Hayato Kanzaki
 * Edge (Panzer Dragoon) = The Arisen (Dragon's Dogma)
 * Dark Prince (Puyo Puyo) = Jedah Dohma
 * Temjin (Virtual-On) = PTX-40A/G Red (Gotcha Force)/G. Kaiser (Tech Romancer)
 * Sakura Shinguji = Date Masamune
 * Gemini Sunrise = Linn Kurosawa
 * Selvaria Bles = Asura
 * Shou Amabane = Sieg Warheit
 * Ali (Beyond Oasis)/Raikoh (Otogi) = Alan (Magic Sword)/Samanosuke Akechi
 * Amigo/ToeJam & Earl = Amingo
 * Astal = Devilotte
 * Vyse = Ruby Heart
 * Ristar = Nathan Spencer
 * Vectorman = Huitzil
 * Metal Sonic = Seth
 * Nyarlathotep (Persona) = Gill
 * Eternal Champion/Dark Champion = Pyron

Bandai-Namco Entertainment
Note: A sandbox page for Bandai-Namco vs. Capcom.

SNK Corporation
While not a Capcom game, there's a sandbox page for DC Universe vs. SNK.

For Capcom vs. SNK 3, check this sandbox page.

Street Fighter X Fatal Fury

 * Ryu = Terry Bogard
 * Ken Masters = Andy Bogard
 * Guile = Kim Kaphwan
 * Chun-Li = Mai Shiranui
 * Cammy White = Blue Mary
 * Dan Hibiki = Joe Higashi
 * E. Honda = Cheng Shinzan
 * Dhalsim = Sokaku Mochizuki
 * Zangief = Raiden/Big Bear
 * Alex = Rock Howard
 * Fei Long = Hon-Fu
 * Sakura Kasugano = Li Xiangfei (or Alice Nakata)
 * Dee Jay = Duck King
 * T. Hawk = Rick Strowd
 * Gouken = Tung Fu Rue
 * Dudley = Michael Max
 * El Fuerte = Tizoc
 * Adon = Hwa Jai
 * Yun = Jin Chonshu
 * Yang = Jin Chonrei
 * Gen = Jubei Yamada
 * Blanka = Bob Wilson
 * Cody = Ryuji Yamazaki
 * Guy = Hokutomaru
 * Urien = Marco Rodriguez
 * Rose = Freeman (Garou)
 * Rashid = Billy Kane
 * Karin = Hotaru Futaba
 * R. Mika = B. Jenet
 * Juri Han = Grant
 * Balrog = Franco Bash
 * Vega = Laurence Blood
 * Sagat = Geese Howard
 * M. Bison = Wolfgang Krauser
 * Gill = Kain R. Heinlein
 * Akuma = Ryo Sakazaki (Secret)
 * Evil Ryu = Nightmare Geese (Secret)

Street Fighter X Art of Fighting
Most of the rivalries came from here.
 * Ryu = Ryo Sakazaki
 * Ken Masters = Robert Garcia
 * Guile = John Crawley
 * Chun-Li = Kasumi Todoh
 * Sakura Kasugano = Yuri Sakazaki
 * Cammy White = King
 * Zangief = Temjin
 * Rufus = Jack Turner
 * Rose = Sinclair
 * Hugo = Wyler
 * Poison = Lenny Creston
 * Fei Long = Lee Pai Long
 * Gen = Ryuhaku Todoh
 * Guy = Eiji Kisaragi
 * Alex = Jin Fu-Ha
 * Birdie = Rody Birts
 * Eagle = Karman Cole
 * Dan Hibiki = Wang Koh-San (comic relief characters who occasionally draws something)
 * Balrog = Mickey Rogers
 * Sagat = Geese Howard (Art of Fighting 2)
 * M. Bison = Mr. Big
 * Gouken = Takuma Sakazaki (Secret)
 * Akuma = Mr. Karate (Secret)
 * Shin Akuma = Serious Mr. Karate

Konami
For a roster of Konami vs. Capcom, check this sandbox page.

ViacomCBS/Nickelodeon
For Nicktoons vs. Capcom, check this sandbox page.

Teenage Mutant Ninja Turtles vs. Street Fighter
Some TMNT characters borrow their moves from Teenage Mutant Ninja Turtles: Tournament Fighters, with roster choices for them coming from these.
 * Ryu = Leonardo
 * Ken Masters = Michelangelo
 * Dan Hibiki = Donatello
 * TBD = Raphael
 * Gouken = Splinter
 * Chun-Li = April O'Neil (fighting like in Shredder's Revenge and Nickelodeon All-Star Brawl)
 * Cody Travers = Casey Jones
 * Ibuki = Karai
 * TBD
 * Blanka = Leatherhead
 * Birdie = Bebop
 * Zangief = Rocksteady
 * TBD
 * Seth = Kraang
 * M. Bison = Shredder
 * Akuma = Super Shredder (Secret Bosses)
 * TBD = Usagi Yojimbo

Final Fantasy vs. Capcom

 * Cloud Strife = Ryu
 * Tidus = Ken Masters
 * Tifa Lockhart = Chun-Li
 * Eiko Carol = Elena (Street Fighter)
 * Vincent Valentine = Dante
 * Terra Branford = Trish
 * Onion Knight (based on his Dissidia Final Fantasy appearances) = Sir Arthur
 * Yuffie Kisaragi = Marino (Mega Man X)
 * Edward "Edge" Geraldine = Strider Hiryu
 * Locke Cole = Edward Falcon
 * ViVi Ornitier = Classic Mega Man
 * Gau (Final Fantasy VI) = Proto Man
 * Kain Highwind = Bass
 * Barret Wallace = Mega Man X
 * Sonon Kusakabe = Axl
 * Paine (Final Fantasy X-2) = Lucia Morgan
 * Snow Villiers = Cody Travers
 * Refia = Guy (Final Fight/Street Fighter)
 * Faris Scherwiz = Cammy White
 * Celes Chere = Sonia Strumm/Harp Note
 * Bartz Klauser = Captain Commando
 * Zell Dincht = Frank West
 * Vaan = Hayato Kanzaki
 * Aerith Gainsborough = Cinnamon (Mega Man X)
 * Jecht = Asura
 * Lann = Nathan Spencer
 * Sabin (Final Fantasy VI) = Mike Haggar
 * Rikku (Final Fantasy X) = Roll Caskett
 * Ramza Beoulve = Amaterasu
 * Auron = Kaijin no Soki
 * Warrior of Light = Monster Hunter
 * Shanotto = Roll
 * Cecil Harvey = Vergil
 * Noctis Lucis Caelum = Morrigan Aensland
 * Amarant Coral = Alex (Street Fighter)
 * Zack Fair = Zero
 * Zidane Tribal = SonSon
 * Ace (Final Fantasy Type-0) = Phoenix Wright
 * Fran (Final Fantasy XII) = Ryu (Breath of Fire)
 * Edgar Roni Figaro = Nina (Breath of Fire)
 * Machina Kunagiri = Batsu Ichimonji
 * Selphie Tilmitt = Sakura Kasugano
 * Rem Tokimiya = Akira Kazama
 * Squall "Leon" Leonhart = Chris Redfield
 * Gilgamesh = Nemesis T-Type
 * Vayne Carudas Solidor = Jedah Dohma
 * Zenos yae Galvus = Pyron
 * Ultimecia = Juri Han
 * Lightning Farron = Lady
 * Hope Estheim = Nero
 * Oerba Yung Fang = Mai-Ling
 * Firion = Kenji (Red Earth)
 * Kimahri Ronso = Leo
 * Refia = Tessa
 * Rinoa Heartilly = Jill Valentine
 * Laguna Loire = Leon S. Kennedy
 * Yuna = Rose (Street Fighter)
 * Kuja = Jedah Dohma
 * Rydia = Felicia
 * Ardyn Izunia = Albert Wesker
 * Kuja = Hyo Iwamano
 * Sephiroth = Akuma
 * Garland = Gill
 * Kefka Palazzo = M. Bison
 * Kefka Palazzo = M. Bison

Square-Enix vs. Capcom

 * Ryu = Cloud Strife
 * Ken Masters = Tidus
 * Dante = Squall "Leon" Leonhart
 * Chun-Li = Tifa Lockhart
 * Mike Haggar = Sabin (Final Fantasy VI)
 * Vergil = Cecil Harvey
 * Nero = Noctis Lucis Caelum
 * Lucia Morgan = Aranea Highwind
 * Amaterasu = Auron
 * SonSon = Zidane Tribal
 * Captain Commando = Sonic Blast Man
 * Classic Mega Man = ViVi Ornitier
 * Proto Man = Zack Fair
 * Roll = Shanotto
 * Akuma = Sephiroth
 * Sir Arthur = Erdrick
 * Edward Falcon = Locke Cole
 * Firebrand = Rocket/Slime
 * Ryu (Breath of Fire) = Crono
 * Batsu Ichimonji = Neku Sakuraba
 * Gill = Dark Lord (Mana)
 * Nathan Spencer = Rico Rodriguez
 * Mega Man X = Barret Wallace
 * Zero = 2B
 * Mega Man Volnutt = Marina Liteyears
 * Asura = Jecht
 * Ada Wong = Yuna (Final Fantasy X/X2)
 * Leon S. Kennedy = Laguna Loire
 * Lady = Paine
 * Albert Wesker = Kuja
 * Fiona Belli = Aya Brea
 * Trish = Mitochondria Eve
 * Michelle Heart = Lenneth Valkyrie
 * Nina (Breath of Fire) = Alicia (Valkyrie Profile 2)
 * Felicia = Meracle Chamlotte (Star Ocean IV)
 * Marino (Mega Man X) = Yuffie Kisaragi
 * Jin Saotome = Edward and Alphonse Elric
 * Juri Han = Ultimecia
 * Gill = Gilgamesh
 * Pyron = Rhapthrone
 * Kefka Palazzo = M. Bison

Ubisoft

 * Ezio Auditore da Firenze = Ryu
 * Just Dance Trainer (She will be given the Wii Fit Trainer treatment and she is a Woman in the game) = Chun-Li
 * Just Dance Panda = Blanka
 * Sam Fisher = Chris Redfield
 * Aaron Keener = Claire Redfield
 * John Tanner = Jill Valentine
 * Dan Miles (C.O.P.: The Recruit) = Leon S. Kennedy
 * Rayman = Amaterasu
 * Barbara = Sir Arthur
 * Raving Rabbid = Servbot
 * Aurora (Child of Light) = Morrigan Aensland
 * Warden (For Honor) = Bishamon
 * Takkar = Monster Hunter
 * Prince (Prince of Persia) = Dante
 * Cesare Borgia = Albert Wesker
 * Vaas Montenegro = M. Bison
 * Rex "Power" Colt = Classic Mega Man
 * Ace Casulink = Proto Man
 * Darcy (Watch Dogs) = Roll
 * Marcus Holloway = Mega Man X
 * Altaïr Ibn-La'Ahad = Zero
 * Jacob Frye = Axl (Mega Man X)
 * Evie Frye = Marino (Mega Man X)
 * TBD = Akuma

Arc System Works
Also includes popular titles published (not developed) by Arc System Works and properties originally owned by it's predecessor Technos Japan.
 * Ryu = Sol Badguy
 * Ken Masters = Ky Kiske
 * Zangief = Potemkin
 * Akuma = Justice
 * Ruby Heart = May
 * Date Masamune = Baiken
 * Strider Hiryu = Chipp Zanuff
 * TBD = Jack-O Valentine
 * Lord Raptor = I-No
 * Morrigan Aensland = Dizzy
 * Jedah Dohma = Slayer
 * Dante = Ragna the Bloodedge
 * Vergil = Jin Kisaragi
 * Chun-Li = Noel Vermillion
 * Felicia = Taokaka
 * Tessa = Konoe Ayatsuki Mercury
 * TBD = Classic Mega Man
 * Mega Man X = Exector (among Arc System Works' first developed titles in 1990's)
 * Zero = Hakumen
 * Captain Commando = Xain (Xain'd Sleena)
 * Kaijin no Soki = Hyde Kido (Under Night In-Birth)
 * TBD = Linne
 * TBD = Hikaru Otagi (Chaos Code)
 * Akira Kazama = Heart Aino
 * Batsu Ichimonji = Kunio
 * Sakura Kasugano = Misako (Kyoko appears as an assist)
 * Cody Travers (based on his Final Fight appearance with weapons from the series alongside some of his techniques from Street Fighter) = Billy Lee
 * Guy = Jimmy Lee (has a different moveset like in the Neo-Geo game)
 * Mike Haggar = Abobo (involves both moves/techniques from the Double Dragon series and River City Girls)
 * M. Bison = Skullmageddon
 * TBD
 * Phoenix Wright = Jake Hunter
 * Sir Arthur = Marco Van de Land (Battle Fantasia)
 * Amaterasu = Olivia (Battle Fantasia)
 * TBD

Universal/DreamWorks Animation/Illumination Studios

 * Po = Ryu
 * Master Tigress = Chun-Li
 * Master Shifu = Gouken
 * Marty McFly = Mega Man X
 * Woody Woodpecker = Classic Mega Man
 * Shrek = Morrigan Aensland
 * Megamind = Zero
 * Tighten = Akuma
 * Hiccup = Sir Arthur
 * Dominic Toretto = Mike Haggar
 * Balto = Amaterasu
 * Metro Man = Captain Commando
 * Van Helsing = Dante
 * Michael Knight and KITT = Chris Redfield
 * Sonny Crockett = Jill Valentine
 * Owen Grady = Leon S. Kennedy
 * Tony Montana = Albert Wesker
 * Jack Frost (Rise of the Guardians) = Vergil
 * Lord Farquaad = M. Bison

Dengeki Bunko vs. Capcom

 * Mikoto Misaka = Ryu
 * Misaki Shokuhou = Ken Masters
 * Shizuo Heiwajima = Luke Sullivan
 * Misaka Worst = Akuma
 * Celty Sturluson = Chun-Li
 * Shutaura Sequenzia = Cammy White
 * Prime Senator Chudelkin = Rufus
 * Akihiko Kayaba/Heathcliff = M. Bison
 * Aisa Himegami = Jedah Dohma
 * Mitsuko Kongou = Karin Kanzuki
 * Touma Kamijou = Batsu Ichimonji
 * Kouko Kaga = Kyosuke Kagami
 * Mii Konori = Akira Kazama
 * Aiho Yomikawa = Kyoko Minazuki
 * Tomoka Minato = Natsu Ayuhara
 * Pierce Aogami = Cody Travers
 * Suguha Kirigaya/Leafa = Guy
 * Critter = Rolento
 * Shizu (Kino's Journey) = Date Masamune (Sengoku Basara)
 * Tokiya Kagaki = Hyo Imawano
 * Shiage Hamazura = Mike Haggar
 * Masahiro Shiina = Sakura Kasugano
 * Megumi Teshio = Makoto
 * Kirino Kousaka = Ran Hibiki
 * Kuroyukihime = Hsien-Ko
 * Kino = Classic Mega Man
 * Eugeo = Proto Man
 * Graphite Edge = Bass
 * Havia Winchel = Duo
 * Kuroko Shirai = Roll
 * Amata Kihara = Dr. Wily
 * Qwenthur Barbotage = Mega Man X
 * Yuuki Konno = Zero
 * Keiko Ayano/Silica = Axl
 * Eugeo = Marino (Mega Man X)
 * Green Grandee = Steel Maximo
 * Mitori Kouzaku = Ferham (Mega Man X)
 * Lime Bell = Cinnamon (Mega Man X)
 * Kiriya Nouzen = Colonel (Mega Man X)
 * Ladylee Tangleroad = Lumine (Mega Man X)
 * Arisa Meigo = June Lin Milliam
 * Naruha Sakuragi = Felicia
 * Kazuma Torisuna = Cyber Blue
 * Shiokishi = Sigma
 * Alice Zuberg/Alice Synthesis Trinity = Sir Arthur
 * Momo = Morrigan Aensland
 * Rentarou Satomi = Chris Redfield
 * Shinei "Shin" Nouzen = Leon Scott Kennedy
 * Tsuzuri Tessou = Jill Valentine
 * Vladilena "Leza" Milize = Ada Wong
 * Harumi Kiyama = Albert Wesker
 * Death Gun = Edward Bilstein
 * Kagetane Hiruko = Lady Dimitrescu
 * Shana = Kaijin no Soki
 * Miyuki Shiba = Tessa (Red Earth)
 * Taiga Aisaka = Leo (Red Earth)
 * Hajime Tsukasa = Scion
 * Tomo Carina Kousaka/Argo = Strider Hiryu
 * Sakuya = Hayato Kanzaki
 * Kirito Kirigaya = Dante
 * Emi Yusa = Nero
 * Asuna Yuuki = Trish
 * Shino Asada/Sinon = Lady
 * Accelerator = Vergil
 * Misumi Tosawa/Mito = Monster Hunter
 * Seiji Noumi/Dusk Taker = Lady Dimitrescu
 * Metatron = Pyron

Kadokawa vs. Capcom

 * Mikoto Misaka = Ryu
 * Misaki Shokuhou = Ken Masters
 * Celty Sturluson = Chun-Li
 * Kuroko Shirai = Sakura Kasugano
 * Megumin = Tessa
 * Aqua = Asura
 * Kirito Kirigaya = Dante
 * Asuna Yuuki = Trish
 * Eugeo = Nero
 * Accelerator = Vergil
 * Kino = Classic Mega Man
 * Qwenthur Barbotage = Mega Man X
 * Yuuki Konno/Zekken = Marino
 * Julis-Alexia von Riessfeld = Zero
 * Kazuma Satou = Monster Hunter
 * Accelerator = Vergil
 * Misaka Worst = Akuma
 * Akihiko Kayaba/Heathcliff = Hyo Imawano
 * Quinella = M. Bison
 * Metatron = Pyron

Kodansha
For Capcom vs. Tezuka Star System, there's an another sandbox page.

Kodansha vs. Capcom

 * Natsu Dragneel = Ryu
 * Gray Fullbuster = Ken Masters
 * Acnologia = Akuma
 * Usagi Tsukuno/Sailor Moon = Chun-Li
 * Yoshiko Hanabatake = Dan Hibiki
 * Hideki Motosuwa = Ran Hibiki
 * Takumi Fujiwara = Frank West
 * Shoutaru Kaneda = Mega Man X
 * Tetsuo Shima (Akira) = M. Bison
 * Bean Bandit = Chris Redfield
 * Motoko Kusanagi = Jill Valentine
 * Tiger Mask = Mike Haggar
 * Ami Mizuno/Sailor Mercury = Hinata Wakaba
 * Ippo Makunouchi = Batsu Ichimonji
 * Minako Aino/Sailor Venus = Ferham (Mega Man X)
 * Akuru Akutsu = Phoenix Wright
 * Syaoran Li = Mai Ling
 * Kyo (Demon Eyes Kyo) = Hyo Imawano
 * Eren Yeager (Past/Heroic) = Dante
 * Negi Springfield = Nero
 * Manji (Blade of the Immortal) = Kajin no Soki
 * Kyrii = Zero
 * Meimi Hanoka/Saint Tail = Strider Hiryu
 * Ezra Scarlet = Leo (Red Earth)
 * Ban Midou = Vergil
 * Hikaru Shidou = Trish
 * Lucy Heartfilia = Menat
 * Levi Ackerman = Monster Hunter
 * Mikasa Ackerman = Lady
 * Meiling Li = Hsien-Ko
 * Shinichi Izumi = Morrigan Aensland
 * Thorfinn = Sir Arthur
 * Ichigo Momomiya/New Ichigo = Felicia
 * Sakura Kinomoto = Nina (Breath of Fire)
 * Makoto Kino/Sailor Jupiter = Cammy White
 * Rei Hino/Sailor Mars = Lucia Morgan
 * Queen Nehelenia = Juri Han
 * Hotaru Tomoe/Sailor Saturn = Vergil
 * Ayako Kagiri = Tessa (Red Earth)
 * Erythrocyte = Cinnamon (Mega Man X)
 * Chi (Chobits) = Nilin (Remember Me)
 * Haru Glory = Donovan Baine
 * Chibiusa Tsukuno/Sailor Chibi-Moon = Roll
 * Gon = Amaterasu
 * Devilman = Gill (Street Fighter)
 * Joe Shimamura (Cyborg 009; other members appear as assists) = Proto Man
 * Astro Boy = Classic Mega Man
 * Hyakkimaru (w/ Dororo) - Date Masamune
 * Mamoru Chiba/Tuxedo Mask = Ryu (Breath of Fire)
 * Queen Beryl = Jedah Dohma
 * Eren Yeager (Future/Villainous) = Asura (Asura's Wrath)
 * Sailor Galaxia = Pyron

Go Nagai

 * Akira Fudo/Devilman = Dante
 * Jack = Ryu
 * Honey Kisaragi/Cutie Honey = Chun-Li
 * Devilman Lady = Morrigan Aensland
 * Mazinger Z = Classic Mega Man
 * Aphrodite A = Roll
 * Great Mazinger = Jin Saotome (w/ Blodia)
 * Getter Robo = PTX-40A
 * Battle Hawk = Viewtiful Joe
 * Ken Taiga/Jushin Liger = Kajin no Soki
 * Seiji Hayami = Chris Redfield
 * Ryo Asuka/Satan = Jedah Dohma

My Hero Academia vs. Capcom

 * Izuku Midoriya/Deku = Ryu
 * Katsuki Bakugo = Ken Masters
 * Momo Yaoyoruzu/Creati = Chun-Li
 * Yo Shindo/Grand = Batsu Ichimonji
 * Toshinori Yagi/All Might = Captain Commando

Shonen Jump vs. Capcom

 * Jotaro Kujo = Ryu
 * Caesar Antonio Zeppeli = Ken Masters
 * Vegeta = Yasha
 * Heihachi Edajima = Hayato Nekketsu
 * Frieza = Twelve (Street Fighter)
 * Chi Chi = Mai-Ling
 * Son Goku = Asura
 * Bobo-bo Bo-bobo = Captain Commando (both are fourth-wall breakers)
 * Suguru Kinniku/Kinnikuman I (aka King Muscle) = Valgas
 * Terryman = Gunloc
 * Robin Mask = Biff Slamkovich
 * Akuma Shogun = The Scorpion (Saturday Night Slam Masters)
 * Warsman (aka Yellow Flash) = Bass (Mega Man)
 * Yusuke Urameshi = Batsu Ichimonji
 * Younger Toguro = Nemesis T-Type
 * Muzan Kitbutsuji = Albert Wesker
 * Sosuke Aizen = Oda Nobunga
 * Future Trunks = Carlos Miyamoto
 * Android 18 = Mega Man Volnutt
 * Raku Ichijou = Guy
 * Tyson Maeda = Kyosuke Kagami
 * Eijiro Kirishima/Red Riot = Steel Massimo
 * Rikido Sato/Sugarman = Mike Haggar
 * Tsubasa Oozora = Rolento (Rival Schools)
 * Yuuma Kuga = Chris Redfield
 * Ryo Saeba = Leon Scott Kennedy
 * Mamiya (Fist of the North Star) = Ada Wong
 * Ichigo Kurosaki = Dante
 * Clare (Claymore) = Trish
 * Momotaro Tsurugi = Vergil
 * Dark Schneider = Nero
 * Kenshiro = Akuma
 * Hyoh = Tessa (Red Earth)
 * Raoh = Jedah Dohma
 * Toriko = Monster Hunter (both are hunters)
 * Arale Norimaki = Roll
 * Izuku Midoriya/Deku = Classic Mega Man (Both of them are Youths who gain powers from many kinds of sources)
 * Katsuki Bakugo = Proto Man
 * Kojiro Bondo/Plamo = E. Honda
 * Momo Yaoyorozu/Creati = Ferham
 * Tenya Ida/Ingenium = Akira Kazama
 * Yu Takeyama/Mt. Lady = Lady Dimitescu
 * Roronoa Zoro = Date Masamune
 * Monkey D. Luffy = Edward Falcon
 * Boa Hancock = Ruby Heart
 * Nami = Cammy White
 * Franky = Tron Bonne and Servbots
 * Joseph Joestar = Rose (Street Fighter)
 * Sanji = Wang Tang
 * Toki = Anakaris
 * Hitomi Kisugi = Chun-Li
 * Ein = Alex (Street Fighter)
 * Cobra (Space Adventure Cobra) = Mega Man X
 * Ochaco Uraraka/Uravity = Axl (Mega Man X)
 * Tony Tony Chopper = Cinnamon (Mega Man X)
 * Denki Kaminari/Chargebolt = Palette (Mega Man X)
 * Kyoka Jiro/Earphone Jack = Sonia Strumm/Harp Note
 * Yamato Agari (Ultimo) = Zero
 * Naruto Uzumaki = Strider Hiryu
 * Sasuke Uchiha = Kenji (Red Earth)
 * Sakura Haruno = Marino (Mega Man X)
 * Hinata Hyuuga-Uzumaki = Kurow Kirishima
 * Kakashi Hatake = Zeku
 * Shoyo Hinata = Natsu Ayuhara
 * Jiraiya = Gouken
 * Asta (Black Clover) = Ryu (Breath of Fire)
 * Chitoge Kirisaki = Tiffany Lords
 * Kazuma Kuwabura = Daigo Kazama
 * Shin (Fist of the North Star) = Karin Kanzuki
 * Videl = Sakura Kasugano
 * Madara Uchiha = Hyo Imawano
 * Pegasus Seiya = Sir Arthur
 * Gin (Silver Fang/Ginga: Nagareboshi Gin) = Amaterasu
 * Jean-Pierre Polnareff = Remy
 * Kurama (Shuichi) Minamino = Elena (Street Fighter)
 * Emma (The Promised Neverland) = Jill Valentine
 * Giorno Giovanna = Jake Muller
 * Yugi Muto = Kou Shishido
 * Medaka Kurokami = Ingrid
 * Yuji Itadori = Jon Talbain
 * Hayato Ijuuin/Umibozu = Lady (Devil May Cry)
 * Jolyne Cujoh = Morrigan Aensland
 * Kenshin Himura = Kaijin no Soki
 * Makoto Shishio = Bishamon
 * Gintoki Sakata = Yukimura Sanada
 * Allen Walker = Nathan "Rad" Spencer
 * Tanjiro Kamado = Donovan Baine
 * Nezuko Kamado = Lilith Aensland
 * Lala Satalin Deviluke = Felicia
 * Rikuo Nura = Leo (Red Earth)
 * All Might = Viewtiful Joe
 * Gon Freecss = Cody Travers
 * Killua Zoldyck = Aaron (Beat Down: Fists of Vengeance)
 * Kankichi Ryotsu (KochiKame) = Ran Hibiki
 * Light Yagami = Urien
 * Senku Ishigami = Phoenix Wright
 * Tsunayoshi Sawada = Nobuanga Oda
 * Himiko Toga = Baby Bonnie Hood
 * Cell = Sigma
 * Tenko Shimura/Tomura Shigaraki = Nemesis T-Type
 * Danjuro Tobita/Gentle Criminal = The Wraith (Saturday Night Slam Masters)
 * Yhwach = Gene (God Hand)
 * Funny Valentine = M. Bison
 * Dio Brando = Gill

Hasbro

 * Green Ranger (Tommy Oliver) = Ryu
 * Scarlet (G.I. Joe) = Jill Valentine
 * Red Jungle Fury Ranger = Chun-Li
 * Duke (G.I. Joe) = Chris Redfield
 * TBD = Dante
 * TBD = Lady
 * Optimus Prime = Mega Man X
 * Grid Battleforce Red Ranger (Devon Daniels) = Zero
 * Leoric = Morrigan Aensland
 * Jem (Jem and the Holograms) = Felicia
 * Bumblebee = Classic Mega Man
 * Pinkie Pie = Roll
 * ROM the Space Knight = Proto Man
 * Action Man = Nathan "Rad" Spencer
 * Mr. Potato Head = Phoenix Wright
 * Snake Eyes = Strider Hiryu
 * Cobra Commander = Albert Wesker
 * Megatron = Sigma
 * Starscream = Bass
 * Twilight Sparkle = Tessa
 * Rainbow Dash = Amaterasu
 * Unicron = Pyron

Pretty Cure vs. Capcom
(P.S.: If this game is gonna have Official English Voice Acting, then it would pull a Dragon Ball XenoVerse approach (aka the Promoted Fanboy trope) for the PreCure side as there are many good Pretty Cure (and  Glitter Force) English Fandub Clips on YouTube).
 * Cure Black = Ryu
 * Cure White = Ken
 * Shiny Luminous = Chun-Li
 * Cure Moonlight = Morrigan Aensland
 * Cure Magical = Dante
 * Cure Sunny = Trish
 * Cure Scarlet = Vergil
 * Cure Lovely = Marino (Mega Man X)
 * Cure Princess = Jill Valentine
 * Cure Bloom = Batsu Ichimonji
 * Cure Windy = Akira Kazama
 * Cure Pine = Claire Redfield
 * Cure Miracle = Classic Mega Man
 * Cure Peach = Proto Man
 * Cure Berry = Cammy White
 * Cure Yell = Mega Man X
 * Cure Blossom = Zero
 * Cure Star = Axl (Mega Man X)
 * Cure Grace = Cinnamon (Mega Man X)
 * Cure Marine = Pallette (Mega Man X)
 * Cure Rhythm = Amaterasu
 * Cure Infini = Alex (Street Fighter)
 * Dokurokushe = M. Bison
 * Cure Cosmo = Felicia
 * Ophiuchus = Gill
 * Close = Lord Raptor
 * Joker = Albert Wesker
 * Cure Summer = Roll

Guests

 * Usagi Tsukuno/Sailor Moon
 * Mamoru Chiba/Tuxedo Mask
 * Sonic the Hedgehog
 * Arle Nadja

Shogakukan

 * Ohma Tokita = Ryu
 * Kenichi Shiharama = Ken Masters
 * Recca Hanabishi = Strider Hiryu
 * Nishikata = Batsu Ichimonji
 * Kaori Akashi = Hinata Wakaba
 * Hayate Ayasaki = Kyosuke Kagami
 * Momoko Hanasaki/Wedding Peach = Ingrid
 * Mao Ran (Fighting Beauty) = Chun-Li
 * Inuyasha = Dante
 * Utena Tenjou = Trish
 * Revy (Black Lagoon) = Lady
 * Sesshōmaru = Vergil
 * Ranma Saotome = Akira Kazama (both has Chinese martial arts styles and are involved on both genders; Ranma being able to change his gender and Akira having a outfit to hide her being a girl prior to enrolling)
 * Doraemon = Classic Mega Man
 * Ryo Takatsuki = Mega Man X
 * Takagi (Teasing Master Takagi-San) = Roll
 * Takeshi Tomoe = Zero
 * Balalaika = Albert Wesker
 * Aladdin (Magi) = Rashid
 * Afro Tanaka = Frank West
 * David Jehoahaz Abraham = M. Bison
 * Lum Invader = Morrigan Aensland
 * Ushio Aotsuki = Nemesis T-Type
 * Tora = Amaterasu
 * Ataru Moroboshi (Urusei Yatsura) = Dan Hibiki
 * Conan Edogawa/Shinichi Kudo = Phoenix Wright
 * Duke "Golgo 13" Togo = Chris Redfield
 * Daigo Asahina = Jill Valentine

Tatsunoko vs. Capcom (for a hypothetical Tatsunoko vs. Capcom Remaster/Sequel)

 * Ryu = Ken the Eagle (Science Ninja Team Gatchaman/Battle of the Planets)
 * Chun-Li = Jun the Swan
 * Alex = Ryu the Owl
 * Morrigan Aensland = Doronjo
 * Dante = Gawl Kudo
 * Rock Light/Classic Mega Man (w/ Rush) = Go Mifune/Speed Racer
 * Mega Man X = Casshern (w/ Friender)
 * Roll = Yatterman-2 (weapon-wielding female sidekicks)
 * Zero = Joe the Condor (rebel-like heroes)
 * Marino (Mega Man X) = Wataru Toki/Yattodetaman
 * Sigma = Black King (Neo-Human Casshern)
 * Axl = Hurricane Polymar
 * Bass = Rescue Man
 * Felyne = Speedy Cerviche/Yattarou (Samurai Pizza Cats; with Guido Anchovy/Sukashi and Polly Esther/Pururun as assists)
 * Saki Omokane = Tekkaman (members of a defense force)
 * Sir Arthur = Tekkaman Blade (both are knights)
 * Tessa = Komugi Nakahara (Nurse Witch Komugi)
 * Kaijin no Soki = Karas
 * Captain Commando = Ryu Urashiman (Future Police Urashiman)
 * Batsu Ichimonji = Yatterman-1
 * Leon S. Kennedy = Kyosuke Date
 * Viewtiful Joe = Ippatsuman
 * Phoenix Wright = Tamagon
 * Ingrid = Komugi Nakahara
 * Proto Man = Rin Yuki (Muteking: The Dashing Warrior)
 * Frank West = Hakushon Daimao (The Genie Family)
 * Amaterasu (since Yami was already the final boss in the original game) = Yoko Misaki and Godam
 * PTX-40A = Gold Lightan
 * Jin Saotome and Blodia = Yuuki Soleil
 * Akuma = Tekkaman Evil
 * Braiking Boss = M. Bison

Image Comics

 * Invincible = Ryu
 * Bulletproof = Ken Masters
 * Atom Eve = Chun-Li
 * Supreme = Gouken
 * Radiant Black = Classic Mega Man
 * SuperPatriot = Bass
 * Tech Jacket = Mega Man X
 * TBD = Zero
 * TBD = Axl
 * Damien Darkblood = Phoenix Wright
 * Spawn = Dante
 * Mikey Rhodes = Nero
 * Shane Walsh = Rolento
 * Negan = Albert Wesker
 * Rick Grimes = Chris Redfield
 * Kyle Barnes = Felicia
 * Wolf-Man = Jon Talbain
 * Darkness = Blanka
 * Super-Dinosaur = Amaterasu
 * Savage Dragon = Blanka
 * Huck = Mike Haggar
 * Anissa = Cammy White
 * Omni-Man = Akuma
 * Thragg = M. Bison

Disney/Marvel/Lucasfilm/20th Century Studios
For Disney vs. Capcom, check this page.

Avengers vs. Street Fighter

 * Captain America = Ryu
 * Iron Man = Cammy White
 * Hulk = Zangief
 * Red Hulk = Abigail
 * Thor = Gouken
 * Black Widow = C. Viper
 * Hawkeye = Ibuki
 * Shang-Chi = Chun-Li
 * Captain Marvel VII = Ken Masters
 * Punisher = Guile
 * Wolverine = Alex
 * Vision = G
 * Black Panther = Elena
 * Falcon = Ibuki
 * Green Goblin = Q
 * She-Hulk = Rainbow Mika
 * Kingpin = Urien
 * Mr. Negative = Necalli
 * Kang the Conqueror = Oro
 * Squirrel Girl = Dan Hibiki
 * Thing = Abel
 * Ms. Marvel (Kamala Khan) = Dhalsim
 * Spider-Man = Zeku
 * Moon Knight = Cody
 * Justice = Sakura Kasugano
 * Winter Soldier = Charlie Nash
 * Daredevil = Guy
 * Jessica Jones = Lucia Morgan
 * Elektra = Maki
 * Luke Cage = Balrog
 * Nick Fury = Dudley
 * Spider-Man (Miles Morales) = Dee Jay
 * Silk (Cindy Moon) = Juri Han
 * Iron Fist = Makoto
 * Volstagg = Rufus
 * Ghost Rider = Akira Kazama
 * Loki = Gill
 * Scarlet Witch = Rose
 * America Chavez = El Fuerte
 * Quicksilver = E. Honda
 * Thanos = M. Bison
 * Doctor Strange = Menat
 * Ultron = Seth
 * Omega the Unknown = Kage
 * Super-Skrull = Eleven (Street Fighter)
 * Knull = Akuma

Guests

 * Cloud Strife
 * Tifa Lockhart
 * Sora
 * Riku
 * Classic Mega Man
 * Roll
 * Mega Man X
 * Zero

Disney vs. Mega Man

 * Captain Jake = Classic Mega Man
 * Minnie Mouse = Roll Light
 * Donald Duck = Duo
 * Goofy = Auto
 * Ernie the Giant Chicken = Yellow Devil
 * Sora = OVER-1
 * Riku = NERO L
 * Kairi = Harp Note
 * Phineas Flynn = Axl
 * Ferb Fletcher = Proto Man
 * Wreck-It Ralph = Hard Man
 * Fix-It Felix Jr. = Crash Man
 * Quicksilver = Quick Man
 * King Mickey = Magic Man
 * Sibma = Centaur Man
 * Wolverine = Slash Man
 * Queen Elsa = Ice Man
 * Darkwing Duck = Shadow (Mega Man X)
 * Psylocke = Marino
 * Indiana Jones = Ferham
 * Isabella Garcia-Shapiro (appears in her Fireside Girls Uniform as her Main Outfit) = Cinnamon
 * Perry the Platypus/Agent P = Splash Woman
 * Sam Flynn = Mega Man.EXE
 * Falcon = Glyde.EXE
 * Spider-Man = Shadow Man.EXE
 * Roll.EXE = Quorra
 * Iron Man = Mega Man X
 * Luke Skywalker = Zero
 * General Leia Organa = Alia
 * Wall-E = Mega Man Volnutt
 * Punisher = Vile
 * Gamora = Sage Harpuia
 * Drax the Destroyer = Steel Massimo
 * Botos = Pete
 * Captain Hook = Tron Bonne
 * 2nd Dimension Dr. Heinz Doofenshmirtz = Colonel Redips
 * Kang the Conqueror = Time Man
 * Green Goblin = Dr. Wily
 * Ultron = Copy-X
 * Darth Vader = Sigma
 * Darth Vader = Sigma

Disney vs. Street Fighter

 * Captain Jake = Ryu (both of them had Black hair, they wear red headbands, they had a Superpowered Dark Side (Werewolf and Dark Ryu) and they're two of the biggest faces of their respective specific parts of their very own Companies of origin; Captain Jake is the face of Disney Junior from 2011-16 whereas Ryu on the other hand, is the face of Capcom's Fighting Game division)
 * Captain Marvel (Carol Danvers) = Ken Masters
 * Shang-Chi = Chun-Li
 * Kim Possible = Crimson Viper
 * Mr. Incredible = Abel
 * Captain America = Alex
 * Wolverine = Vega
 * Punisher = Guile
 * Queen Elsa = Kolin
 * Sora = Rose
 * King Mickey = Menat
 * Judy Hopps = Lucia Morgan
 * Homer Simpson = Birdie
 * Donald = TBD
 * Goofy = TBD
 * TBD
 * TBD
 * Xenomorph = Q (Street Fighter)
 * Predator = Necalli
 * Phineas Flynn = Yun
 * Ferb Fletcher = Yang
 * Isabella Garcia-Shapiro (in her Fireside Girls Uniform) = Akira Kazama
 * Lord Dominator = Akuma
 * 2nd Dimension Dr. Heinz Doofenshmirtz = Seth
 * Lord Thanos = Gill
 * Darth Vader = M. Bison

Guests

 * Sonic the Hedgehog
 * Athena Asamiya

Warner Bros. Entertainment/Hanna-Barbera/DC/NetherRealm Studios/Cartoon Network
For Midway vs. Capcom, there's this sandbox page.

Cartoon Network vs. Capcom

 * Steven Quartz Universe (Appears in his post-Season 5 Appearance) = Ryu
 * Dexter = Tron Bonne
 * Samurai Jack = Dante
 * Ashi = Trish
 * Spinel = Dhalsim
 * Finn = Monster Hunter
 * Jake = Sir Arthur
 * Lapis Lazuli = Felicia
 * Mordecai = Jin Saotome
 * Marceline = Lord Raptor
 * Blossom (appears in her 1998 series appearance and moveset being based on that with Bubbles and Buttercup as assists and Dynamo for her Level 3 Hyper Combo or Injustice-esque Super Move; albeit older) = Roll
 * Princess Bubblegum = Phoenix Wright
 * Aku = Gill
 * TBD = Batsu Ichimonji
 * Captain K'nuckles = Zack and Wiki
 * Ben Tennyson (appears in his Alien Force/Ultimate Alliance appearances) = Mega Man X
 * Robotboy = Classic Mega Man
 * Amethyst = Cinnamon (Mega Man X)
 * Kevin 11 = Proto Man
 * Grim (The Grim Adventures of Billy & Mandy) = Morrigan Aensland
 * Numbah 1 (with others as assists) = Chris Redfield
 * Tulip (Infinity Train) = Jill Valentine
 * Johnny Bravo = Mike Haggar
 * Gar = Axl
 * Enid = Marino (Mega Man X)
 * Garnet = Alex (Street Fighter)
 * Jennifer Lee = Chun-Li
 * Pearl = Zero
 * Courage = Amaterasu
 * K.O. (OK K.O.! Let's Be Heroes) = Viewtiful Joe
 * Eddy (with Ed and Edd/Double-D) = Frank West
 * Gumball Watterson (with Darwin as an assist) = Felyne
 * Supercow (Cow & Chicken) = Dan Hibiki
 * Rex (Generator Rex) = Nathan "Rad" Spencer
 * T.O.M. (Toonami) = Captain Commando
 * Sym-Bionic Titan = PTX-40A
 * Mandark = Albert Wesker
 * Ice King = Gill
 * Magic Man = Tessa (Red Earth)
 * Princess Morbucks = Urien
 * Mojo Jojo = M. Bison
 * Vilgax = Akuma
 * Father (Codename: Kids Next Door) = Jedah Dohma
 * Susan Strong = R. Mika
 * Zak Saturday = Mega Man Volnutt
 * Jasper = Alex (Street Fighter)
 * HIM = Pyron (mid bosses)

Guests

 * Booster Gold (DC Comics)
 * Cassie Cage (Mortal Kombat)
 * Kenshi Takahashi (Mortal Kombat)
 * Ruby Rose (RWBY)
 * Squirrel Girl (Marvel Comics)
 * Cloud Strife (Final Fantasy)
 * Tifa Lockhart (Final Fantasy)
 * Sonic the Hedgehog (Sonic the Hedgehog)

DC Universe vs. Capcom

 * Superman = Ryu
 * Superboy = Batsu Ichimonji
 * Batman = Chris Redfield
 * Ares = Asura
 * Wonder Woman = Chun-Li
 * Aquaman = Ruby Heart
 * Cyborg = Mega Man X
 * Blue Beetle = Classic Mega Man
 * The Flash (Barry Allen) = Viewtiful Joe
 * Green Lantern (Hal Jordan) = Bass
 * Green Arrow = Sir Arthur
 * Raven = Morrigan Aensland
 * John Constantine = Dante
 * Martian Manhunter = Dhalsim
 * Shazam = Gene
 * Firestorm = Edward Falcon
 * Nightwing = Zero
 * Hawkgirl = Michelle Heart
 * Robin (Damian Wayne) = Alastor
 * Booster Gold = Captain Commando
 * Red Hood = Leon S. Kennedy
 * Adam Strange = Axl
 * Vigilante (Adrian Chase) = H.U.N.K.
 * Supergirl = Roll
 * The Question = Phoenix Wright
 * Caitlin Fairchild = Cammy White
 * Static = TBD
 * The Joker = Albert Wesker
 * Catwoman = Jill Valentine (RE5 version like in Ultimate Marvel vs. Capcom 3)
 * Bane = Mike Haggar
 * Atrocitus = TBD
 * Etrigan = Firebrand
 * Swamp-Thing = Amingo
 * Doomsday = Nemesis T-Type
 * Brainiac = Sigma
 * Darkseid = Akuma
 * Batman Who Laughs = M. Bison

Pre-Order Bonuses

 * Dr. Manhattan (DC Side)
 * Pyron (Capcom Side)

Street Fighter vs. Mortal Kombat

 * Ryu = Liu Kang
 * Ken Masters = Kung Lao
 * Guile = Jax Briggs
 * Cammy White = Sonya Blade
 * Chun-Li = Kitana
 * Zangief = Goro
 * Fei Long = Johnny Cage
 * Gouken = Raiden
 * Akuma = Scorpion
 * Geki = Sub-Zero
 * Sakura Kasugano = Li Mei
 * Karin = Cassie Cage
 * E. Honda = Bo' Rai Cho
 * T. Hawk = Nightwolf
 * Juri Han = Mileena
 * Rolento = Kurtis Stryker
 * Blanka = Reptile
 * Dan Hibiki = Mokap
 * Alex = Shujinko
 * Kolin = Frost
 * Oro = Ermac (mysterious red-clad fighters with telekinetic powers)
 * TBD
 * TBD
 * Abel = TBD
 * R. Mika = Sheeva
 * Rashid = Fujin
 * Rose = Ashrah
 * Dhalsim = Quan Chi
 * Gen = Shang Tsung
 * Balrog = Kano
 * Vega = Baraka
 * Sagat = Kintaro
 * M. Bison = Shao Kahn
 * Necalli = Kotal Kahn
 * Oni = Shinnok
 * Seth = Onaga
 * Gill = Blaze