Nicktoons Unite Again

Nicktoons Unite Again is the fourth sequel to Nicktoons Unite. Like the original, it uses a team of up to four characters from Nickelodeon toons. It has 90 characters (excluding DLC). The total is 116 characters (including DLC).

Plot
Spongebob and his many friends realize that a new villain by the name of Ri-Ot the Free-er who freed all the villains from their respective worlds (except for Doug, CatDog, Fanboy/Chum-Chum and the three cats). There are sixteen gems that are found in sixteen different universes. Once they get the gems, they will use it to defeat Ri-Ot.

Playable Characters

 * Spongebob Squarepants
 * Patrick Star
 * Danny Phantom
 * Timmy Turner
 * Jimmy Neutron
 * Dudley Puppy
 * Cindy Vortex
 * Libby Folax
 * Invader Zim
 * Tak
 * Ren Hoek
 * Rocko
 * Jenny Wakeman/XJ9
 * Doug
 * Tommy Pickles
 * Bessie Higgenbottom
 * Eliza Thornberry
 * CatDog
 * Fanboy
 * Chum-Chum
 * El Tigre
 * Mr. Blik
 * Gordon Quid
 * Waffle
 * Otis
 * Avatar Aang
 * Avatar Wan
 * Avatar Korra
 * Leonardo
 * Raphael
 * Michaelangelo
 * Donatello

Unlockable Characters

 * Mermaid Man & Barnacle Boy (Bikini Bottom)
 * Sandy Cheeks (Rock Bottom)
 * Mr. Krabs (Chum Bucket)
 * Tucker Foley (Amity Park)
 * Jazz Fenton (Danny's House)
 * Vlad Masters (Ghost World)
 * Cosmo and Wanda (Dimmsdale)
 * Vicky (Fairy World)
 * Mr. Crocker (Chincinnati)
 * Carl Wheezer (Retroville)
 * Goddard (Jimmy's Lab)
 * Ooblar (Yokus)
 * Ultra-Lord (NegaRetroville)
 * The Herminator (Negatron's Lab)
 * Kitty Katswell (T.U.F.F. Puppy)
 * GIR (Dark City)
 * Gaz (Zim's House)
 * Almighty Tallest (Hobo 13)
 * Lok (Pupanunu Village)
 * Jibolba (Juju World)
 * Flora (Dream World)
 * Stimpy (Ren's House)
 * Fire Chief (Streetway)
 * George (Stimpy's House)
 * Heffer Wolffe (Conglom-O)
 * Ed Bighead (Chewy Chicken)
 * Bev Bighead (Welcome to Heck)
 * Nora Wakeman (Tremorton)
 * Brad Carbunkle (Jenny's House)
 * Misty (Tremorton High)
 * Vega (Cluster Prime Streets)
 * Smytus (Vexus' Temple)
 * Spike (Life With The Rugrats)
 * Phil & Lil (Lava Java)
 * Chuckie Finster (Reptar's World)
 * Happy Higgenbottom (San Francisco)
 * Portia (Bessie's Apartment)
 * Gwen (The Dragonflies)
 * Darwin (African Jungle)
 * Donnie (The Savannah)
 * Nigel Thornberry (Rocky Mountain)
 * Amon (The Land of Raava)
 * Azula (The Fire Nation)
 * Aye-Aye (The Spirit World)
 * Splinter (New York Sewers)
 * Bebop & Rocksteady (New York City)
 * Shredder (Dimension X)
 * Frida (Miracle City)
 * Voltura (Miracle City Sewers)
 * Sartana (Dr. Chipotle's Lab)
 * Pip (The Barn)
 * Freddy (The Field)
 * Peck (The Pack)

DLC Characters

 * Squidward Tentacles
 * Sam Manson
 * Crimson Chin
 * Sheen Estevez
 * Dib
 * Party Juju
 * Powdered Toast Man
 * Really Really Big Man
 * Silver Shell
 * Reptar
 * Marianne Thornberry
 * Raava
 * Casey Jones
 * White Pantera
 * Pig
 * Plankton
 * Nicolai Technus
 * Gilded Arches
 * King Goobot
 * Tak the Irken
 * Tlaloc
 * Mr. Horse
 * Peaches
 * Vexus
 * Angelica Pickles
 * Siri the Leopard
 * Vaatu
 * Lord Dregg
 * Puma Loco
 * Dag

Spongebob's World

 * Plankton (Without DLC)
 * Gary the Snail
 * Bubbles
 * Deniss
 * Perch Perkins
 * King Neptune
 * Mindy the Mermaid
 * Squidward Tentacles (Without DLC)

Danny's World

 * Sam Manson (Without DLC)

Timmy's World

 * Chester
 * A.J.
 * Tootie
 * Poof
 * Crimson Chin (Without DLC)
 * Mr. Turner
 * Mrs. Turner

Jimmy's World

 * Hugh Neutron
 * Judy Neutron
 * Sheen Estevez (Without DLC)
 * Yolkian Announcer
 * Mr. Wheezer

Zim's World

 * Robo-Parents
 * Ms. Bitters
 * Professor Membrane
 * Invader Skoodge
 * Keef

Tak's World

 * Jibolba (Without DLC)
 * Fauna
 * Dinky Juju
 * Two-Headed Juju
 * Moon Juju
 * Caged Juju
 * Belly Juju
 * Giant Misunderstanding
 * Travis the Dark Juju

Jenny's World

 * Tuck
 * Ptersa
 * Misty

The Avatar's World

 * Raava (Without DLC)
 * Iroh
 * Toph Bei Fong

TMNT World

 * April O'Neil
 * Napoleon Bonafrog

El Tigre's World

 * White Pantera (Without DLC)

Otis' World

 * Pig (Without DLC)

Bosses

 * 1) Man-Ray & Dirty Bubble
 * 2) Plankton
 * 3) Evil Danny
 * 4) Undergrowth
 * 5) Denzel Crocker
 * 6) Body of Evil & Nega-Chin
 * 7) Professor Calamitous
 * 8) Goobot & Poultra
 * 9) Jimmy Negatron & The Herminator
 * 10) Hobo 678
 * 11) Tlaloc & Dream Guardian
 * 12) Mr. Horse
 * 13) Giant Peaches
 * 14) Vexus, Armagedroid & Killgore
 * 15) Reptar
 * 16) The Dragonflies
 * 17) Siri the Leopard
 * 18) Vaatu
 * 19) Max Winters and Stone Generals
 * 20) Karai
 * 21) Shredder and Krang
 * 22) Dr. Chipotle and Guacamole
 * Dag
 * 1) Ri-Ot
 * 2) Me-Ga Ri-Ot

Prologue

 * 1) Training

Spongebob's World

 * 1) Bikini Bottom
 * 2) Rock Bottom
 * 3) Chum Bucket

Danny's World

 * 1) Amity Park
 * 2) Danny's House
 * 3) Ghost World

Timmy's World

 * 1) Dimmsdale
 * 2) Fairy World
 * 3) Chincinnati

Jimmy's World

 * 1) Retroville
 * 2) Jimmy's Lab
 * 3) Yokus
 * 4) NegaRetroville
 * 5) Negatron's Lab

Zim's World

 * 1) Dark City
 * 2) Zim's House
 * 3) Hobo 13

Tak's World

 * 1) Pupanunu Village
 * 2) Juju World
 * 3) Dream World

Ren's World

 * 1) Ren's House
 * 2) Streetway
 * 3) Stimpy's House

Rocko's World

 * 1) Conglom-O
 * 2) Chewy Chicken
 * 3) Welcome to Heck

Jenny's World

 * 1) Tremorton
 * 2) Jenny's House
 * 3) Tremorton High
 * 4) Cluster Prime Streets
 * 5) Vexus' Temple

Tommy's World

 * 1) Life With The Rugrats
 * 2) Java Lava
 * 3) Reptar's World

Bessie's World

 * 1) San Francisco
 * 2) Bessie's Apartment
 * 3) The Dragonflies' Nest

Eliza's World

 * 1) African Jungle
 * 2) The Savannah
 * 3) Rocky Mountain

The Avatar's World

 * 1) Land of Raava
 * 2) The Fire Nation
 * 3) The Spirit World

TMNT World

 * 1) New York Sewers
 * 2) New York City
 * 3) Dimension X

El Tigre's World

 * 1) Miracle City
 * 2) Miracle City Sewers
 * 3) Dr. Chipotle's Lab

Otis' World

 * 1) The Barn
 * 2) The Field
 * 3) The Pack

End Boss

 * 1) The Final Battle
 * 2) The REAL Final Battle

Rating
Rated E10 for cartoon violence.

Voice Cast

 * Tom Kenny as Spongebob, Heffer Wolffe, Peaches, Dirty Bubble
 * David Kaufman as Danny Phantom
 * Tara Strong as Timmy Turner, Poof, Killgore
 * Roger Bumpass as Squidward, Professor Membrane, Barnacle Boy
 * Daran Norris as Cosmo, Jorgen von Strangle, The Herminator, Mr. Turner, White Pantera
 * Suzanne Blakeslee as Wanda, Mrs. Turner
 * Jay Leno as Crimson Chin, Nega-Chin
 * Debi Derryberry as Jimmy Neutron, Jimmy Negatron
 * Amy Poehler as Bessie Higgenbottom
 * Carlos Alazraqui as Rocko, Puma Loco, Spunky
 * Carolyn Lawrence as Sandy Cheeks, Cindy Vortex
 * Charlie Adler as Ed and Bev Bighead
 * Doug Lawrence as Plankton, Filburt, Bikini Bottom Announcer
 * Billy West as Doug, Ren, Stimpy, Mr. Horse, George, Fire Chief, Powdered Toast Man, Ooblar
 * Lacey Chabert as Eliza Thornberry
 * Alanna Ubach as El Tigre
 * Grey DeLisle as Vicky, Siri, Sam Manson, Portia, Reptar, Azula, Frida
 * Richard Horvitz as Zim
 * Rosarik Rikki Simons as GIR
 * Andy Berman as Dib
 * Melissa Fahn as Gaz
 * Candi Milo as Nora Wakeman, Ms. Bitters, Nick Dean
 * Audrey Wasilewski as Tuck, Vega, Misty
 * Steve Blum as Smytus
 * Patrick Stewart as King Goobot, Max Winters, Man-Ray
 * Jason Marsden as Tak, Aye-Aye, Chester
 * Patrick Warburton as Lok
 * John Kassir as Jibolba
 * Flea as Donnie
 * David Hornsby as Fanboy
 * Nika Futterman as Chum Chum
 * Tom Kane as Darwin, Nigel Thornberry
 * E.G. Daily as Tommy Pickles
 * James Arnold Taylor as Leonardo
 * Sean Astin as Raphael
 * Greg Cipes as Michelangelo
 * Cam Clarke as Freddy
 * Rob Paulsen as Donatello, Carl Wheezer, Gordon Quid, Gilded Arches, Mr. Wheezer, Party Juju, Tlaloc, Two-Headed Juju
 * Jeff Garcia as Sheen, Pip
 * Jeff Bennett as Two-Headed Juju, Caged Juju, Pins, Needles
 * Nancy Cartwright as Chuckie Finster
 * Kevin Michael Richardson as Shredder, Armagedroid
 * Wally Wingert as Tallest Red
 * Kevin McDonald as Tallest Purple, Waffle
 * Wayne Knight as Mr. Blik
 * Mae Whitman as April O'Neil
 * Steven Yeun as Wan
 * April Stewart as Raava
 * Jonathan Adams as Vaatu
 * Frank Welker as Goddard, Momo, Happy, Appa, Mermaid Man
 * D.B. Sweeney as Aang
 * Greg Baldwin as Splinter, Iroh
 * Britany Ibiashi as Karai
 * Gary Anthony Williams as Bebop
 * Sheamus as Rocksteady
 * Jon Heder as Napoleon Bonafrog
 * Cree Summer as Vexus, Libby, Tiff Crust
 * Scarlett Johansson as Mindy the Mermaid
 * Helmut Bakaitis as Lord Dregg