Kiriwar

Japanese name:

キリオ

Executes the rule violators of the tournament. Though he works for Arbitro, his ties to him are loose and he often likes to get him mad. At 200cm, he is a tall, strong man who carries a metal pipe (which he has lovingly named "Mitsuko") as a weapon.

He has short, black hair and a scar across his forehead. He is usually seen with Gunji, who he calls "hiyo" or "hiyoko" (which means "baby chick"). Kiriwar likes to mess with Arbitro and seems to not care much about his job. His name is pronounced "Kirio" but is officially written as "Kiriwar".

Wikipedia