Beast Boy (Mouse) is the smallest variant of Beast Boy that appears in LEGO Batman 3: Beyond Gotham.

Appearances in StoryEdit

Beast Boy (Mouse) does not have a major role in the story but is thought to have aided the heroes in their mission to prevent Brainiac from using the power of the lantern rings to shrink planets into miniature size.


  • Beast Boy (Mouse) can pass through LEGO grates.
  • Beast Boy (Mouse) can turn into Beast Boy.


Beast Boy (Mouse) is unlocked in succession with Beast Boy.


  • Beast Boy (Mouse) is only playable in the presence of grates and cannot be controlled otherwise.