Yeti Tabby

Yeti Tabby is a light blue Teletubby with no antennae and spiky blue hair. He has jet-black eyes and white fur on his shoulders and wrists. After his mutation, he became larger and more muscular, with a white face and three pairs of sharp teeth on the sides of his mouth. The Fat Yeti begins killing and eating any Fat Yeti that wander into the mountains, feigning friendliness to lure them in. A security droid named Unit 437 is sent after him, but the Fat Yeti easily defeats it. He spares the droid in exchange for chopping wood for his fire and cooking his meat.
As you venture into the Mountains, you hear Yeti Tabby speaking to you, then ambush you and knock you out. You're taken to his camp, where you awaken surrounded by bloody remains.