The cast of The LEGO Movie spinoff LEGO Batman grows more and more impressive with the announcement that Ralph Fiennes has signed on to voice the role of Alfred Pennyworth, Bruce Wayne’s loyal butler and adviser. The actor is the two-time Academy Award nominated star of Schindler’s List, the Harry Potter and James Bond franchises, The English Patient, The Grand Budapest Hotel, and many, many others.

Fiennes joins a cast that includes Will Arnett once again taking on the Batman role he played in The LEGO Movie, Zach Galifianakis as Batman’s greatest rival Joker, Rosario Dawson as Batgirl, and Michael Cera as the Boy Wonder, Robin.

Warner Brothers has found their Joker for LEGO Batman, the upcoming animated spinoff of their 2015 hit The LEGO Movie.

It’s being reported that Birdman: Or (The Unexpected Virtue of Ignorance) and The Hangover star Zach Galifianakis has been cast as the super villain. The character has previously been played by names like Heath Ledger and Jack Nicholson in movies, and by Star Wars star Mark Hamill in numerous voice acting roles.

Galifianakis joins a cast that already includes Will Arnett, once again playing the Batman role he played in The LEGO Movie, and Michael Cera, who was recently cast as the Boy Wonder, Robin.

It looks like Will Arnett wont be the only member of Arrested Development‘s chaotically dysfunctional Bluth family to be venturing into Warner Brothers’ cinematic Legoland as one of DC Comics’ most iconic superheros.

Michael Cera, who played Arnett’s nephew George Michael Bluth on Arrested (and also starred in a few films you might have heard of, such as Superbad, Scott Pilgrim vs. the World, Juno, Nick and Norah’s Infinite Playlist, and so on), has signed on to the voice cast of the upcoming The Lego Batman Movie. He’ll be playing none other than the Dark Knight’s longtime faithful sidekick Robin, the Boy Wonder.

Warner Bros, The LEGO Movie, was such a huge hit that the studio moved forward with spinoff films and a sequel. Since the film’s release, three spinoff films have been announced; the first will focus on Batman’s character; the second will center on Ninjago; the third and most recently announced one will be written by Jason Segel and Drew Pearce. Rob Schrab of Community will direct The LEGO Movie sequel. These spinoffs and its sequel will now see a shift in schedules, which is nothing entirely new as most will stay within their respective release years.

Jason Segel (The Muppets) and Drew Pearce (Iron Man 3) to write and co-direct the latest LEGO Movie spinoff, The Billion Brick Race. The two, better known for their writing, will be making their directorial debuts with the new film. Ninjago and The LEGO Batman Movie are among the other LEGO-related movie spinoffs slated for release.

We can’t be sure what the film will be about since it is in the early stages of development. But if Segel and Pearce are on board as writers and directors, then you can be sure it will be funny and action-packed. Hit the jump for more.