As Damien Gray points out in the special features of The LEGO Batman Movie home release: the team behind the film broke the LEGO designs down to their most essential elements and built everything (the characters, the structures, etc.) from the ground up.
Like The LEGO Movie, Chris McKay’s Lego Batman Movie leans headfirst into ideas of imagination and creativity.
Because of this major creative decision, anyone who goes out and acquires the right set of LEGO bricks will have the ability to recreate entire segments from the film in the comfort of their own homes.
Will Arnett’s version of The Dark Knight remains a “Master Builder, ” and that quality allows him to create incredible designs for ships, weapons, gadgets, and anything else that he might need while fighting LEGO Joker (Zach Galifianakis) on the streets of Gotham City.