|“||Um, we have not any clue on what really happened, though some witnesses said that early in the morning that same day, an unknown person went into the factory and... Uhh... Yeah, nobody really knew who that person was or anything, and the weird thing is, he never came out of the factory either. We also had a Wario costume in the back room, you know for mascot purposes, and the weird thing, uhh, that costume actually disappeared on that same day. So we don't really know where it is...||”|
— Phone Guy describing the Wario Man costume and Wario-Man himself.
Wario Man is the costumed version of Wario, who only seems to appear in the Bathrooms. He looks exactly like Wario-Man from Super Smash Bros. Brawl but with blank eyes. When he appears, the Bathrooms' camera feed will flicker, allowing the player to see the room.
So far, he does not appear to be dangerous, since he has not been seen attacking the player, nor in any other rooms.
Wario Man makes an appearance in Five Nights at Wario's 2.
Wario Man is the costumed version of Wario and his eyes are blank. He resumes his look from the previous game.
Wario Man will rarely appear for a split second in the player's vision, and vanish shortly after. He appears during the storm.
Sometimes, he appears on the staircase of Living Room 3, but not when the player hides in this room.
In Night 5, if the player uses the Music Box, Wario Man and the plumbers (Wario, Waluigi, Mario and Luigi) gather. Wario Man (or the person behind the costume) presents himself to apologize for what he did.
Wario Man returns in Five Nights at Wario's: Origins. This time, however, he is an active antagonist.
He is only active at Night 6, where the player returns to The Office from the first game in the franchise. He is the only enemy to worry about, but he is extremely active and can enter both the left door and the window on the right. The player will need to watch the cameras very carefully to know which way Wario Man is coming.