Ultimate DC Cinematic Universe

This is what the DCU would be like if the movies were less divisive & contain some actors from Arrowverse.

Justice League

 * Bruce Wayne/Batman (Ben Affleck):
 * Kal-El/Clark Kent/Superman (Henry Cavill):
 * Princess Diana/Diana Prince/Wonder Woman (Gal Gadot):
 * Hal Jordan/Green Lantern (Nathan Fillon):
 * Barry Allen/The Flash (Ezra Miller):
 * Orin/Arthur Curry/Aquaman (Jason Momoa):
 * J'onn J'onzz/Calvin Swanwick/Martian Manhunter (David Harewood): A inhabitant of Mars during the era of the Green Martians. After a planet-wide act of genocide enacted by Ma'alefa'ak, he lost his wife, children & was left as the only survivor of his people. In the centuries that followed, he traveled to Earth where he would set up a number of identities using his shape shifting powers.
 * Billy Baston/Captain Marvel/Shazam (Zach Callison/John Cena): A orphaned boy who was chosen by a wizard to be a champion of good. The wizard gifted him with the power of six legendary Greek figures & became an adult superhero empowered by six legendary Greek figures.
 * Victor "Vic" Stone/Cyborg (Ray Fisher): A former college athlete who, following a horrible accident, crafted cybernetics for himself via a Mother Box.
 * Kendra Saunders/Hawkgirl (Ciara Renée): A young woman who was encouraged by her grandfather's first cousin, Shiera to embrace her destiny & join the Justice League.

Allies

 * Lois Lane (Amy Adams): A career-driven intrepid reporter who speaks her mind & goes for the big scoop regardless of the dangers.
 * Alfred Thaddeus Crane Pennyworth (Jeremy Irons): An old friend to the Wayne Family & now serves as Bruce's bodyguard, he has served with the position of the Wayne's butler for many years.
 * Kara Zor-El/Kara Danvers/Supergirl (Melissa Benoist): An ancient member of the House of El & Superman's ancient ancestor who was assigned to the Fortress of Solitude & sent out into the universe where she might aid in the terraforming of new worlds. After an encounter with a criminal stowaway, the Fortress of Solitude crashed on Earth, where it would lay dormant for thousands of years. As for her, after she survived the crash & made her way out into the new world she would learn to call home, she would live a long & fulfilling life while being the guardian of Prehistoric Earth.
 * Iris West Allen (Kiersey Clemons): Barry's love-interest who's a reporter for the Picture News.
 * Commissioner James "Jim" Gordon (J.K. Simmons): The police commissioner of Gotham City who shares Batman's deep commitment to ridding the city of crime.
 * Barbara Gordon/Batgirl (Emily Bett Rickards): Jim's daughter who's an extremely intelligence detective & martial artist who maintains a civilian identity as a librarian. 1 night after witnessing Batman stop a group of thugs, she was inspired to begin her path in fighting crime.
 * John Stewart/Green Lantern (Idris Elba): An architect, social activist & United States Marine sniper who was selected by the Guardians of the Universe to be one of the Green Lanterns for Sector 2814.
 * Selina Kyle/Catwoman (Anne Hathaway):
 * Mera (Amber Heard): Aquaman's wife & henceforth the Queen of Atlantis.
 * Oliver Queen/Green Arrow (Stephen Amell): A spoiled, thrill-seeking playboy, until he was left stranded on a deserted island for several years. There, he trained to become a master archer in order to survive.
 * Dinah Drake Lance/Black Canary (Katie Cassidy): Green Arrow's love-interest who was born into a family of crime fighters as her mother was a vigilante & her father is a cop. She then, after years of training, followed in her parents' footsteps. Her ‘Canary Cry’ is a by product of her possession of the Meta-Gene, making her a Meta-Human since birth.
 * Roy Harper/Red Arrow/Arsenal (Colton Haynes): A young hacker who was raised by a Navajo tribe after the death of his father & once hacked into the Queen Industries R&D department & began to want to work in the field after Oliver bailed him out, who was reluctant to let him put himself in danger, remembering Tommy's warnings that his recklessness would get people killed. He began to resent this & took up drinking, eventually falling into alcoholism, straining their relationship.
 * Kent V. Nelson/Doctor Fate (Matt Smith):
 * Maxine Hunkel/Red Tornado (Voice: Jennifer Hale; Maxine: Alicia Vikander):
 * Ted Kord/Blue Beetle (Matt Bomer): A superhero who, deprived of the scarab that empowered his predecessor, was forced to rely on his superior athleticism, fighting prowess & technological genius to combat crime.
 * Nathaniel Adam/Captain Atom (Andrew Lincoln): A superhero fueled by the Quantum Field who volunteered to be apart of an experiment which turned him into an energy-based life form & given Mark I Monarch Armor to contain his radiation.
 * Jason Todd/Robin/Red Hood (Jensen Ackles): A street orphan who was taken in by the Batman, becoming the second Robin, was trained by Bruce & was his partner for years, but was captured by the Joker, who proceeded to torture & kill him along with Harley Quinn, before leaving his body for Bruce to find. Then, he was resurrected by the Lazarus Pit & became the vigilante known today.
 * Jefferson Pierce/Black Lightning (Cress Williams): A superhero who grew up in a slum in Metropolis, made good as an athlete & returned to his old neighborhood to teach at the high school & help the next generation make something of themselves, only to become a superhero again after finding the neighborhood in the grip of organized crime, equipped with a belt that gave him electrical powers, thought he could manifest the powers without the belt later on.
 * Kate Kane/Batwoman (Evan Rachel Wood): One of the many vigilantes who protect Gotham City who, after being dismissed from the military for being an unknown reason, had been living a directionless party-girl heiress life until, on a dark night, a chance encounter with Batman inspired her to find a new calling in life
 * John Henry Irons/Steel (Courtney B. Vance): A weapons engineer at LexCorp, who after realizing what his weapons were being used for, resigned from the company & made his own in the form of Steelworks. With his new business, he sought to honor the memory of Superman, who fell in battle against Doomsday. To do this, he created an advanced exoskeleton suit of armor & forged a Kinetic Hammer to use in his adventures.
 * Adam Strange (Miles Teller): A mere archaeologist who was transported to the planet of Rann via the Zeta-Beam, immediately befriended the Rannians & took up a flight pack & ray-gun to assist them.
 * Helena Rosa Bertinelli/Huntress (Jessica De Gouw): A vigilante who operates out of Gotham City, is a devout Catholic & is very in touch with her Italian heritage. Her career is inspired by a personal vendetta against organized crime, responsible for killing her entire family. At first, her ruthless methods & willingness to kill made her an outcast from other heroes, but in time she learned to temper her methods & became accepted by her peers.
 * Michael Jon Carter/Booster Gold (Channing Tatum): A superhero who, humiliated in the 25th century, stole future technology & a security robot named Skeets & traveled back into the 21st century to become the greatest hero you've never heard of.
 * Theodore "Ted" Grant/Wildcat (J.R. Ramirez): A world-class heavyweight boxer who became entangled inadvertently in the criminal underworld & developed a costumed identity to clear his name.

Titans

 * Rachel Roth/Raven (Elizabeth Gillies):
 * Richard John "Dick" Grayson/Robin/Nightwing (Brenton Thwaites): Batman's former sidekick who, born to a family of acrobats, began his life with an exciting childhood growing up in the circus. These happy times soon take a turn for the worse as the mafia began targeting the circus. At 8 years old, he witnesses Black Mask threaten the circus owner, demanding insurance for the safety of his performers, which he vehemently refuses. Unfortunately, Black Mask decides to use the headlining act, which happens to be The Flying Graysons, as an example.Feeling empathy for losing his parents, Bruce decides to take the boy in as his legal ward. Bruce decides that with the boy's extensive training in acrobatics and his sense of justice, he has just what’s needed to become the Batman's partner. Later, he chose to go out on his own & only to get attacked by Deathstroke, who was hunting Batman. He manages to escape & chooses that he had to help his old friend & agrees to stay in contact with Bruce & sometimes work together when the other needed backup.
 * Donna Troy/Donna Prince/Wonder-Girl (Adelaide Kane): Wonder Woman's sidekick who, after receiving an appropriate education in photography, founded Aurora Photo Studio's where she & her colleagues Carl Woods & Joe Richani worked & lived in the pent house right above the Studio.
 * Damian Wanye (David Mazouz): Batman & Talia's son who would eventually become the next Robin, working alongside Dick Grayson.
 * Wally West/Kid Flash (John Boyega): Iris' adopted brother who gained the same abilities as the Flash after coming in contact with the Speed Force.

Justice League Dark

 * Jon Constantine (Matt Ryan):
 * Jim Corrigan/Spectre (John Noble):

Villains

 * China White (Kelly Hu): The tertiary antagonist of Green Arrow who's an international crime lord smuggling drugs on the island on Oliver was stranded for Brick.
 * Harleen Frances Quinzel/Harley Quinn (Margot Robbie): The Joker's former sidekick & Queenpin & Crime Lord of Harley's Gang who was originally the Joker's psychiatrist, however, as time went on, she started to fall in love with him & helped him escape from Arkham Asylum, only to have a fallout & start her own gang.
 * Pamela Elizabeth Isley/Poison Ivy (Uma Thurman): Harley's Partner-in-Crime & one of Batman's most lethal enemies and perhaps the world's most prominent eco-terrorist with a unique ability to control and manipulate plants.
 * Rosamunde "Rose" Worth Wilson (Saoirse Ronan):

Suicide Squad

 * Tatsu Yamashiro/Katana (Karen Fukuhara): Rick Flag's bodyguard who's a sword-wielding samurai assassin. Her blade is the Soultaker Sword, a mystical relic that steals the essence of those it slays & stores them inside. It was taken in a duel with the man who killed her family, Takeo Yamashiro. She's a master of swordplay & martial arts, trained to the highest level in the ancient art form. She was eventually recruited by Rick to be member of the Suicide Squad.