Ifer is half human, half demon. To cut a long story short about 4 hundred years ago he was attacked by an evil demon in the kitchen of the tavern he owned. Shadow (my imortal human character, who I'm yet to draw), hearing his cries for help, comes to the rescure and kills the demon by attacking it from behind (I won't go into detail). Ifer was badly wounded and some blood from the demon seeped into his open wounds (again I won't go into detail about what appened next), hence the half demon thing. Now he to is imortal. His demon side tries to take over when he is angered. He has leant to fight back, but sometimes he is not strong enough and needs someone (usually Shadow) to calm him down or stun him like a wild beast.