Isaias is the name he gives you. He doesn’t remember if it’s his or not. It hardly matters. All he needs is for you to grant him your power, and pull him through to your world. It should be simple...

PURGAT...

Do you even know you have the Ring of the Sunwalker on your hand? He'll do anything to get it from you.

An escaped elven slave taking refuge in Kirkwall. (As lore accurate as I could manage!)

The Dream Demon.