The Iron Bull, or Hissrad as he is known among his own people, is the one-eyed Qunari leader of the Bull's Chargers and a member of the Ben-Hassrath.
He remains in command of the Bull's Chargers, though spends much of his time drinking, lazing about and overindulging - all clear violations of the Qun. Despite his unusually friendly demeanor and lax attitude to his philosophy, The Iron Bull still has a loyalty to the Qun which dies hard. He doesn't proselytize.