Karrioz

A dwarfish, beast-like, pagan knight in the service of King Roaz of Glois. His bones had no marrow, doubling their strength.

He guarded the path to Roaz’s castle, and Wigalois (Gawain’s son) had to contend with him when he traveled to Glois to kill Roaz. Much feared for his prowess, Karrioz was nevertheless defeated by Wigalois. Fleeing from Wigalois, he ran headlong into a poisonous swamp fog and was killed.