This is Erreth Marrlok, a revenant who became lost in the mists, when he was looking for more legends to commune with, after some of the previous ones, the ones he once called allies, betrayed him and left him powerless, he wandered through the mists for a very long time, not knowing how to come back to Tyria, losing track of time, Erreth decided that he would commune directly with the mists, becoming more powerful than he had ever been.