WB Animation, YOUNG JUSTICE. I claim no ownership of the character or his various incarnation across the DC multiverse, this was developed from an existing template.
So here we come to my third Justice League movie idea. This would follow a DC Tier Three set of movies: Batman: The Killing Joke, which follows Batman's final battle against the Joker in 1989, ending in Batman finally killing the Joker and hanging up the cowl; Flash: Speed Force set in 1991, following Barry Allan's merger with the Speed Force and Wally West's ascension as the new Flash, and Superman: Doomsday, set in 1992 following the death of Superman at the hands of Doomsday, a being reverse engineered from Superman's DNA by LexCorp who secretly funded genetic research under the guise of the Human Genome Project. A subplot of Doomsday is Hal Jordan's breakdown and conversion to Paralax which is our teaser at the end of the movie. This movie is a kind of second origin for a New Justice League, formed in the wake of Superman's death by the new Batman: Dick Grayson. With Superman's death a new generation of criminals have come into the forefront committing acts of random violence, a reflection on the more tragic crimes of the 1990s like Waco, Columbine, the LA Riots, and the Oklahoma City bombing. The movie would follow Batman's efforts to recruit the new generation of heroes to work together to reduce the random violence of the era, and by the middle of the film, defend the Earth against Paralax, the former Green Lantern once known as Hal Jordan.
Anyway, the Roster from left to right.
John Stewart: The Third Green Lantern - This is by far my favorite Green Lanter, because he brings the sense of duty of Hal Jordan without the arrogance or the hyper conservatism. John took up the role of Green Lantern at the end of Superman: Doomsday when Hal Jordan goes bonkers and wipes out a sizable portion of Oa before being driven back into the void. He's a veteran of Desert Storm and a Marine Corps pilot. He never faced Paralax when he first struck Oa, and feels as though his enlistment in the Green Lantern Corps was something the Guardians were hesitant to carry out, given that a human is their greatest traitor.
Dick Grayson: The Second Batman - The founder of the new Justice League, Grayson isn't nearly as brooding as his predecessor, and patrols a Gotham that needs a Batman far less than it did in Wayne's day. By day Dick is an associate and Wayne Enterprises under the aging Lucius Fox, and one of the few people Bruce is still willing to open up to after the death of the Joker and what happened to Barbara. He is a worthy successor to the cowl, and operates out of the Cave beneath Wayne Manor, officially visiting Bruce as his adoptive son. He is assisted by Barbara Gordon, confined to a wheelchair since her assault at the hands of the Joker, and acting as Dick's eyes and ears. When he is away with the League, Dick delegates his duties to Tim Drake (Red Robin) and Damian Wayne, currently the fourth Robin and Bruce Wayne's bastard son. Grayson believes the world needs a Justice League because the problems of the world are no longer limited to street crime, but the threat of random acts of violence and disorder. He feels that if this new Justice League remains impartial in politics, it could avoid the pitfalls that destroyed the first League. Where the Bruce Wayne of this universe is very much Frank Miller's Batman, Dick Grayson is more like the Batman of the animated series (before season four or the JLU), he smiles, has a life outside of the cowl, and wears it out of a sense of duty to the downtrodden rather than some quest for vengeance. He is still the brains (and in some sense the money) behind the new League, but he has more heart than his predecessor.
Kara Kent: Supewoman - The most unwilling member of the League, by far. Kara has spent the last ten years away from hero duty, going to college, restoring Kent Farm to its former glory, and trying to have a quiet life away from the world that has hurt her too many times to count. She sees Jonn J'onzz once a week for therapy secession, and while she's doing much better than after her abduction at the hands of Darkseid, she isn't initially willing to get back out to hero work. It is only after one of her regular visits with Lois Lane (Superman's widow and the closest thing to family she still has), that she decides the world needs a Superman, or in this case as Superwoman. Lois is now editor of the Daily Planet, and between the grief she feels for Clark's death and the constant barrage of news of massacres against the innocent, Kara seems to have switched roles as the sympathetic ear. She joins the League, and takes up the mantle of Superwoman, and finds herself rediscovering the joy she felt as a teenager when she used her powers to help people. By the end of the movie, we see her overcome her personal daemons to defeat Hal Jordan and ascend to become the leader the League needs.
Diana: Wonder Woman - The only remaining member of the first Justice League. After a decade in exile on Themyscira after Steve Trevor's death, Diana is now one of two remaining Amazons on the island, accompanied only by her mother's attendant, Philippus. Diana is reluctant to rejoin Man's world, but agrees to do so after Dick reminds her that there is nothing for her on Themyscira anymore. She leaves the island to serve as the Leader of the League after encountering the reluctance of Kara. Wonder Woman is more matronly despite her same youthful appearance, the death of Steve still haunts her to this day. She returns to Man's world with a desire to find a new reason for being.
Wally West: The Third Flash - The original Kid Flash, Wally has proudly filled the shoes of his mentor Barry Alan after he merged with the Speed Force several years ago. Much more a talker than his predecessors, Wally is more of a sprinter, stopping to banter with those he's with and then start moving right on again. Wally is impulsive, and well meaning, but not known for thinking things through. Where Barry worked with surgical precision, Wally is more like an exploding packet of razor blades. I revamped his design to make him a little more unique than how he is normally depicted (usually its just the same outfit that Barry had), borrowing elements of his old Kid Flash costume.