Arriving in the Phantom Zone, Batman witnesses the harm his selfishness has caused to everyone and slowly accepts his greatest fear. Upon facing him alone, Joker believes that Batman is incapable of change and zaps him to the Phantom Zone before stealing the Batcave's stash of confiscated bombs. Although Batman finds himself able to trust and rely on his new team upon reaching Wayne Island, he chooses to send them away rather than losing them like his parents. Realizing that the city does in fact need him, Barbara releases Batman and Robin and teams up with them and Alfred to stop the Joker. While the Projector is being seized as evidence, Harley steals it back as part of Joker's plan and frees him, allowing him to return to Gotham with all the villains he had recruited in the Phantom Zone, including King Kong, the Gremlins, the Wicked Witch of the West and her Flying Monkeys, a Tyrannosaurus rex and a Velociraptor (presumably from Jurassic Park/ Jurassic World), Lord Voldemort, Sauron, the Jaws great white shark, the Daleks, Lord Vampyre, The Evil Mummy, Swamp Creature, Medusa, Agent Smith and his clones, Skeleton Warriors, General Zod and the Kraken. Suspecting that the Joker wanted to be sent there, Barbara locks up Batman and Robin. Reluctantly agreeing to do so, Batman fosters Dick as Robin, whereupon the pair successfully recover the Projector from the Fortress of Solitude and break into Arkham Asylum to send Joker to the Phantom Zone.
Suspecting his archenemy is up to something, Batman plots to steal Superman's Phantom Zone Projector (a device that can banish anyone to the Phantom Zone which houses some of the most dangerous villains in the Lego multiverse), only for Alfred to intervene and advise him to take care of Dick Grayson, whom Batman accidentally adopted as his ward during the gala earlier. Joker crashes the party with the city's other villains, all of whom surrender except Harley Quinn, who mysteriously disappears during the confusion. The following day, Batman's alter-ego Bruce Wayne attends the city's winter gala which is celebrating both the retirement of Commissioner Gordon and the ascension of his daughter Barbara as the city's new police commissioner, only to be infuriated by Barbara's plans to restructure the police to function without the need of Batman. During his latest mission to stop the Joker from destroying the city, Batman hurts Joker's feelings by telling him he is not as important in Batman's life as he thinks he is, leading Joker to seek the ultimate revenge on him. Within the DC superhero dimension in the Lego Universe, Batman continues to protect Gotham City and fight crime.
4 List of non DC characters in the film.3 List of Batman/DC characters in the film.