Your Best Friend Is a Killer In the Horror Mansion.
Its a fully black character and it is seen that his torso is ripped open and you could see his ribs and teeth around it. He has a big patch of blood on his right arm. He has glowing red eyes and it's holding a black bloody knife.
He is not to Slow But His Damage Is High. His audio Plays the Game Over Sound When you get A Game Over in Sonic.Exe. He also has a similar appearance to living nightmare.