Cromag, a towering humanoid creature, stood at two and a half meters. This being, "belonging" to Mosh Pelkan, possessed immense eyes and disproportionately large shoulders and arms, giving him a distinctive "V" shaped physique.
At Pelkan's Mansion situated on Questal, Cromag served as the main gladiator in the arena. He frequently battled prisoners provided by Imperial Moff Bandor, Pelkan's superior. A notable instance involved Cromag defeating both a Gamorrean and a Wookiee at the same time within the arena's confines.