‘LEGO Batman Movie’ Poster: Be Yourself. Unless You Can Be Batman.

A spinoff of 2014’s “The LEGO Movie,” “The LEGO Batman Movie” sees Will Arnett reprise his voice role as the Dark Knight, joined by Michael Cera as Robin, Rosario Dawson as Batgirl, Ralph Fiennes as Alfred, Mariah Carey as the mayor of Gotham and Zach Galifianakis as The Joker.

In the film, Batman discovers that if he wants to save the city from The Joker’s hostile takeover, he may have to drop the lone vigilante thing, try to work with others and maybe, just maybe, learn to lighten up.

“The LEGO Movie” earned $469 million worldwide, and won an Academy Award for best original song for “Everything is Awesome.” A sequel is planned for Feb. 8, 2019, with another spinoff, “The LEGO Ninjago Movie,” set for release next year.