<Li> Ferrell also plays "The Man Upstairs," a Lego collector in the live - action part of the film </Li> <Li> Elizabeth Banks as Lucy / Wyldstyle, a Master Builder </Li> <Li> Will Arnett as Bruce Wayne / Batman, a DC Comics superhero who is a Master Builder </Li> <Li> Nick Offerman as Metal Beard, a giant makeshift pirate and Master Builder </Li>

Who does the voice of robin in the batman lego movie