Rot mouse is a fanmade antagonist in Abandoned: Discovery Island.
Rot-mouse looks like a normal Mickey, but he has black eyes, human flesh sticking out, and dust covering him.
While moving he says this:
"THE BLOOD ON MY HANDS"
"I AM ETERNAL"
"YOU WILL UNDERSTAND MY PAIN"
In order to get rid of him, you have to hide for at least 15 seconds or he will jumpscare you.
- His original names included "Walt' and "Mick-rot"