Raccoon Goon
Tom Nook's Bodyguard
I voted Coco thanks to those soulless eyes, but I stumbled across something (?) called Clay on an island once and nearly jumped out of my skin! Not sure what he was supposed to be, but he was terrifying.
Clay? The hamster? I have him on my island, he's kinda sweet but also really creepy sometimes, so, you're on to something there. lol