Luigi

Role In Story
Luigi helped Silver build the cloning machines, Silver asked him if he could clone himself too, Luigi agreed and along with Mario, Peach, and Yoshi, they were cloned, due to Platinum messing with the cloning machines during the process, they become evil at night and try to kill Wario, Wario escapes, but tells no one, Luigi stayed for a few months before being retired.

Appearance
Luigi looks like the real Luigi with a few differences, he has a bow tie, and his hat has bunny ears, referencing the bunny power-up from Super Mario Land 2, at night his eyes become bloodshot and his teeth become sharp.

FNaM 1
Luigi will start from the show stage and make his way to you through the left door, if he's there, shut the door, if you wait too long, he'll jam the door functions, if you don't close the door, he'll kill you.

Mario Mayhem
Luigi will start from the show stage and make his way to you through the left door, once he's there, shut the door, if you wait too long he'll jam the door functions, the mask will work but slower, if you don't do either, he'll kill you.