Iryssas has thick black hair. He has a stocky face with a square-cut beard.
Iryssas is one of Xinemus's three main subordinates. He does not welcome Drusas Achamian to Xinemus's fire, but Xinemus insists that he treat Achamian with respect. He does, though never forgetting that Achamian, as a sorcerer, is damned.
As the Holy War begins marching, Iryssas gains a reputation for being slow-witted. His attempts to debate with Kellhus become a common occurrence around Xinemus's fire, to the amusement of the others.