Sten as the Arishok After the death of the previous Arishok in Kirkwall, Sten replaced him. ... To Alistair's surprise, the new Arishok turns out to be Sten.

When did Sten become Arishok?

Sten IS the Arishok during the events of Inquisition. He replaces the old Arishok after DA2. Alistair and Sten even fight at one time during the events of Dragon Age: Those Who Speak.

What happens if you refuse to fight the Arishok?

The Death of the Arishok If the duel is not offered or is offered and refused, the party will fight the Arishok and his Qunari to the death (the Arishok may be easier to beat this way).