The True Costume is a hallucination in Abandoned: Discovery Island.
He looks similar to Photo-Negative Mickey, except that his textures are darker.
He starts from Broadcasting Room, coming out from TV. Then he becomes active at 3 AM, and wanders around island. Once he entered your office, the player must shut off camera or he will kill the player. Hiding won't work on him at all. Shutting off power will also work on him, but the player needs to shine the flashlight to get rid of him. Once power is back on, he won't be active anymore.
- He is one of the Jake's Hallucinations.
- The reason why hiding won't work on him is unknown.
- He was planned to start from The Roof, but this was scrapped.
- His appearance is similar to Darkened Photo-Negative Mickey