Scion

Scion (SKIGH-ahn) appears as a huge, demonic, red-skinned humanoid, with grizzly black hair, black eyes, fangs, horns, and bat wings. He wears a blood red helm and a suit of fearsome +5 dastard putrid unrighteous full plate that pulsates and oozes blood. The blood that oozes from the armor is blood from the demons of the Abyss. Any creature that is touched by even a drop of the blood must make a Will save (DC 23) or be affected as if by a helm of opposite alignment, and having their alignment changed from a good or neutral version to that of an evil equivalent (lawful good or lawful neutral becomes lawful evil, etc.). The armor also functions as both demon armor and half-plate of the dark prince. 

In battle, Scion wields a Large +5 cruel flaming menacing ominous unholy greatsword flamberge (4d8 damage) or a Large +5 impact thundering unholy heavy mace (3d6 damage). In addition, any offensive spell Scion uses in combat is always treated as having the Fearsome metamagic feat, without using a higher level spell slot.