Ender Beast

My idea was that while in the outer islands in the end, it would be possible to come across a large cave opening lit by Jack-o-lanterns (see "End Cavern"). If you were to venture inside you would come across a 2.5 block tall hostile beast guarding two chests. This beast would use its claws as a melee attack causing 4.5 hearts of damage per hit and stand on two feet. My idea is that it would have the same stature of an iron golem but would have shorter arms. It would be a blackish purple colour like the enderman but would be unable to teleport. I thought it could have similar sound effects to the polar bears but more distorted. I also had the idea that it could drop a map/ compass that could point you in the nearest direction of an end city but I'm not sure if that idea has already been said (please be merciful if it has).