The Sentient Squirrel Death Machine was born as an ordinary squirrel. He lived during the Eocene Epoch, and therefore most likely belonged to the species Hesperopetes thoringtoni. His appearance has somehow become more humanoid, and he possesses enhanced durability, intelligence, longevity, and limited psionic powers. He has ties to the alien race called the Krptaxians, whose home world was destroyed by the Cephalopod of Doom.