Radric is a revenant, a kind of undead that returns to complete some objective or task, tormening the living along the way. Normally a revenant has its memories intact but no conscience, as they're are supposed to torment the living who wronged it in life. However, Radric is different: He has a conscience but no memories of his past life. He chose to devote his existence to helping others, in defiance of his intended nature.
As a revenant Radric doesn't experience fear. During times when he should feel fear he instead feels another emotion, usually anger.
Radric doesn't remember anything before he returned as a revenant.