who acted robin in the lego batman movie
Main article: List of characters in The Lego Movie. 1  Will Arnett as Bruce Wayne / Batman. 2  Zach Galifianakis as the Joker. 3  Michael Cera as Dick Grayson / Robin.  Rosario Dawson as Barbara Gordon 1  / Batgirl. Ralph Fiennes as Alfred Pennyworth.  Jenny Slate as Dr. Harleen Quinzel / Harley 1  Quinn. Siri as Batcomputer (referred to as Puter in the  film)