Torbrad Morrow, the Bog Knight... so named for the place he met his tragic drowning death, and from where he later emerged, his sense of duty yet unresolved, overpowering the sodden clutches of his watery grave.
Less a revenant than a sort of poltergeist, reanimating the armour he wore in life. Some say his marsh-eaten corpse still sits rotting in that armour, though none have dared check on it's condition.
Based on an RPG character I made. Sketched in pencil, then processed in PS for colour.