Karontor was one of the sons of Annam All-Father, the Father of all true giants. His brothers were Grolantor, Stronmaus, Skoraeus, Memnor, Surtr, and Thrym. His sisters were Hiatea, Iallanis, and Diancastra.
Karontor was known as the patron deity of the twisted fomorians and verbeegs. Karontor was a purely evil deity. He resided in the plane of Tarterus, ruling a frozen plain of ice, where ever-hungry winter wolves awaited his orders to hunt across the land. It was rumored among the formorians and verbeegs that at one point in time, Karontor was a great and beautiful being. But his greed and jealousy of Stronmaus caused his form to become twisted and deformed.