'15 Golden Mario

Role in Story
'15 Golden Mario is Origin Mario after being left for 32 years, alone, scared, and full of hatred, he tries to kill Wario a few times but fails, he eventually was recruited to kill Platinum in 1983 with the other golden Marios, after they failed he was returned to his own time.

Appearance
He looks like Mario but with a different color scheme, his hat and shirt are yellow, his overalls are green, and his moustache is white, he has cloning material leaking from his eyes onto his stache, and his eyes are red with light red pupils. his hard mode form gives him a more creepy appearance with a ghost-like effect to his clothes and skin, his eyes become purely red.

FNaM 1
He'll only appear in the left hall corner, he'll enter the office, flip up the monitor so he doesn't kill you.

FNaM 7: the first chapter
He'll only randomly appear on any camera and then he'll enter you're enter your office, flip up the camera to prevent death.

Mario Mayhem
He'll start in the generator room, messing with the generator, don't charge the power while he's there, otherwise he'll destroy the generator, he'll climb up the basement vent, go to a random camera and enter your office, flip up the monitor or put on the mask so he doesn't kill you.