Lucas is a Disney fan made character

He is a Mickey’s adopted alligator

And Monty’s lost brother

Story: One day Mickey saw a tiny alligator and he ran away and he comes back as a grown alligator Mickey had Multiple nightmare about his pet when Mickey was about to go he saw his pet standing at the door he adopted it and named him Lucas

Role: in night 5 lucas will appear behind the main stage he’s a same with Mickey only if Mickey is not active during the custom night he’ll be mirror of Mickey if Mickey is at the door he’ll be at the opposite door