Flash wants to team up with Batman, and is determined to do anything to do it. Meanwhile, Batman tries to find a jester from another dimension, who he fears has teamed up with the Joker.
Bruce Wayne finally relaxes after the battle against the Joker in The LEGO Batman Movie, but Flash keeps interrupting everything. Then, he discovers Jestro and Lord Garmadon have teamed up with the Joker to destroy Gotham. More coming soon.
- Will Arnett as Bruce Wayne/Batman
- Adam DeVine as Barry Allen/Flash
- Vincent Tong as Jestro
- Zach Galifianikis as Joker
- Michael Cera as Dick Grayson/Robin
- Rosario Dawson as Barbara Gordon/Batgirl
- Ralph Fiennes as Alfred Pennyworth
- Channing Tatum as Clark Kent/Superman
- Jonah Hill as Hal Jordan/Green Lantern
- Justin Theroux as Lord Garmadon
- Cobie Smulders as Diana Prince/Wonder Woman