Justice League x RWBY: Super Heroes & Huntsmen is a 2023 two-part American direct-to-video anime-influenced computer animated superhero crossover fantasy film loosely based on the limited crossover comic book series RWBY x Justice League and DC/RWBY written by Marguerite Bennett. A co-production of Rooster Teeth Productions, DC Studios, and Warner Bros. Animation, the film centers on several members of the Justice League mysteriously turned into teenagers and teleported to Remnant while teaming up with Team RWBY to defeat a superpowered Grimm.
Part One first premiered at WonderCon in March 2023 before being released a month later on April 25, 2023. Part Two was released on October 17, 2023.
Plot
Part One
Clark Kent awakens in the Emerald Forest near Beacon Academy on the world of Remnant, where Ruby Rose and Yang Xiao Long are fighting against a pack of Grimm. On Remnant, Superman has gained a semblance that only works in sunlight, making him realize he's much weaker then he normally is and that there are some of his powers he can't use. The two sisters notice that the Grimm can absorb dust and fire lasers, which is unusual. In Menagerie, Blake Belladonna meets Diana Prince while Weiss Schnee meets Bruce Wayne in Atlas, who has also gained a semblance and is a bat faunus. Inside Beacon Academy, Ruby, Yang and Clark unite with Blake and Diana and later find members of Team JNPR Jaune Arc, Nora Valkyrie and Lie Ren with Mari McCabe, Victor Stone, Barry Allen and Jessica Cruz from the Justice league.
The Justice League, who have all become teenagers, put what they remember together and deduce that they were fighting something mechanical before, while also realizing that while in Remnant, the semblance powers they have gained make them much weaker then they normally would be on Earth. Barry being much slower and having lower stamina, Diana's powers coming from her weapons instead of within, Victor's technology matching Remnant's era and therefore much inferior to his usual tech, and Mari and Jessica not even having their respective totem necklace and Green Lantern ring that give them their powers. Meanwhile teams RWBY and JNPR deduce that events such as the Fall of Beacon have apparently not happened, making them suspicious if this is the real Remnant.
Blake, Yang, and Diana set out to find Bruce and Weiss who ultimately come to the conclusion that this is a digital simulation of Remnant, Jaune remains with Jessica to help her find her ring while the others set out to find the cause of their current predicament. The third team comes into conflict with the Grimm, with a Wyvern amongst them and a fatal blow only causes a Leviathan to appear beside it. Jessica and Jaune are suddenly trapped in a white space with a Seer Grimm which, unlike many other things, was real and after getting out are lured into another trap by a simulated Pyrrha Nikos.
Blake, Yang and Diana along with Bruce and Weiss join Ruby, Clark, Nora, Ren, Mari, Victor and Barry with Bruce revealing that Barry is possessed by Kilg%re, who reveals that he turned the Justice League into teenagers (so their insecurities would reemerge and distract them) while trapping them along with Teams RWBY and JNPR in this Simulation with the collaboration of someone from Remnant and Bruce learns from a conscious Barry that Kilg%re's collaborator has trapped him as well. With Jaune's encouragement, Jessica frees the two of them from the trap and join the heroes and together they exorcise Kilg%re from Barry, the latter giving Mari's necklace and Jessica's ring back to them. Kilg%re then possesses the Wyvern but is ultimately defeated. The Justice League and Remnant's heroes bid farewell to each other and return to their respective worlds, with teams RWBY and JNPR awakening in Atlas from what was supposed to be a training simulation.
Part Two
After escaping the digital trap, Justice League members Superman, Wonder Woman, Batman, Flash, Green Lantern, Cyborg and Vixen wake up as adults in the Hall of Justice. Black Canary informs them that they were unconscious after their battle with Kilg%re and were brought in to heal, she then explains that their world is attacked by monsters they haven't seen before, the Grimm. they decide to call team RWBY in Remnant for help. In the meantime the Justice League try to contain the situation and come across Kilg%re possessing a Goliath who indirectly gives them a clue about his ally while a Death Stalker poisons Batman, the one who would likely discover him. Meanwhile in Vacuo, Team RWBY save two civilians from a King Taijitu Grimm, but Ruby's recklessness during the fight causes discomfort for her teammates and tension between her and her sister Yang.