Cerberus

The Cerberus are second type of Canine encountered in Doom RPG. They are first encountered in Sector 3.

Etymology
Cerberus is a Greek mythogical beast who resides in Hades' Underworld and guards the gate to prevent the afterlife souls from leaving. Despite the name, this Cerberus in Doom RPG resembles more of a recolored canine with actually one head instead of three.