Arishok is the millitary leader of qunari. After Petrice's death he becomes the main antagonist of act 2 of the game Dragon Age 2.
He came to Kirkwall searching for a relic stolen when he was in charge to restore his honor and general honor of his kind. He and his soldiers get constantly provoked by xenophobic part of Kirkwall citizens. His delegates get killed by Ser Varnell on Petrice's order but the final event that drives him to start a war is that Isabela stole the relic he was luking for. During the battle big part of Kirkwall gets ruined and a lot of people dead. He gathers all nobles to reeduacte them but Hawke appears stops him.