Cerkonos

Cerkonos is the headmaster of the Fire Ashari in Pyrah, and one of the guardians of the portal from the Material Plane to the Elemental Plane of Fire.

He is portrayed by Matthew Mercer as an NPC in Critical Role campaign one, Vox Machina; and as a player character in campaign three, Bells Hells, by Robbie Daymond, who also voices him in The Legend of Vox Machina.