When Lego Batman's villains keep winding up murdered, The Dark Knight is perplexed because that's usually his job. With his new son Damian suited up as the latest Robin, the two embark on a mission to solve the mystery, get the crown, and save Bikini Bottom.

Forrest Whaley
as Batman / Thomas Wayne / Mayor Hill / Polka-Dot Man

Bobby Burns
as Damian Wayne

Jonathan Aubrey
as Red Hood

Kim Smith
as Oracle / Batgirl

Keshen Dawson
as Alfred Pennyworth

Mason Howerton
as Nightwing

Sean Willets
as Computer

James LaRock
as Bane / Gothamite

Alyssa Whaley
as Dame in Car

Tre Mowat
as Handsome Cop