Justice League vs Teen Titans

Justice League vs. Teen Titans is a 2016 direct-to-video animated film directed by Sam Liu from a screenplay by Alan Burnett and Bryan Q. Miller. The story brings together the Justice League as depicted in the earlier DC Films such as Justice League: War with the Teen Titans depicted in a different version than Teen Titans and Teen Titans Go.

Plot
The Justice League-Superman, Wonder Woman, The Flash, Batman, and Cyborg-fight their respective enemies-Lex Luthor, Cheetah, Weather Wizard, Solomon Grundy, and The Toymaker. Once the League has everyone captured, Weather Wizard makes a break only to be possessed by Trigon, a demon intent on crossing into our world. The possessed Weather Wizard is difficult for the League to take down; Damian Wayne, the current Robin (and Batman's son) flies the Bat jet into the Weather Wizard, forcing the demon out of the Weather Wizard. In response to Damien's rashness and lack of teamwork, Batman has Nightwing take Damian to Titan Tower to learn teamwork with the Teen Titans-Starfire, Blue Beetle, Beast Boy, and Raven. Damian continues to be a solo player which creates friction between him and the team. Damian begins to bond with Raven when he finds her meditating; the bond between Damian and Raven and the team strengthens when Starfire takes them to a carnival. Trigon reaches out to Raven and tries to take her via his demonic emissaries, but is fought by Damian and the other Teen Titans.

Trigon makes another attempt at Raven by possessing Superman; his transformation into being fully controlled by Trigon begins by seeing images of Trigon's world and his demons as shadows, then when he is fighting Atomic Skull, he brutally beats the villain down. When Batman pull out kryptonite to stop Superman, Superman's possession fully manifests with his skin turning red and his face having four eyes and he speaks of taking a girl. Cyborg and the League eventually work out that the girl is Raven and go to Titan Tower to take Raven; the Titans are unwilling to let Raven go, which leads to a standoff. Raven explains that this is Trigon's plan; just as she does Trigon sends his shadows to take over the Justice League. Batman injects himself with a nerve toxin and puts himself into a coma; the others are possessed by the shadows of Trigon and become his emissaries. The possessed Justice league beat and use the Titans as leverage to get Raven to go with them to the shrine where she will open the portal for Trigon. As the emissaries leave, Blue Beetle is able to shoot a dart and free Cyborg from Trigon's control.

The Titans head to the shrine to get Raven back. They bring Superman back from possession by stabbing him with kryptonite; Superman then frees Flash by breaking Flash's legs and Wonder Woman by binding her in her lasso and compelling her to say her name. Raven's power opens the portal and Trigon enters Earth; while the Justice League fights Trigon, the Titans fall into his Hell dimension to stop him. Raven goes to the chamber where the crystal to imprison Trigon is; the crystal is broken by Ra's al Ghul, who is now a servant of Trigon and asks Damian to kill Raven. Damian fights and defeats Ra's al Ghul and Raven seals Trigon into a shard of the crystal. The shard becomes the crystal Raven wears on her forehead. Cyborg decides to leave the Justice League to join the Teen Titans and the League thanks the Titans for their efforts in defeating Trigon.