Phantom Mangle

Phantom Mangle is an animatronic in Ultimate Custom Night and was a main antagonist in FNaF 3.

Appearance
Phantom Mangle appears to be a burnt version of Mangle. Phantom Mangle is dark green and black with white eyes and a black bow tie. It body is completely torn revealing its whole endoskeleton. Its hands and feet are black and it has wires coming from its head.

Mechanic
Phantom Mangle: Will appear at random in your viewing monitor. Close the monitor or switch viewing modes to make it disappear. If left onscreen for too long, Phantom Mangle will invade your office temporarily, causing audio distractions and increasing your noise meter, which can attract even more problems.

Strategy
Like in FNaF 3, if you see her staring back at you, the best thing to do is switch to another camera that is useful for tracking other animatronics, so you are still using your monitor time usefully.