Volos is a hemomancer, one who uses blood for magic. Kinda like Skarlet from Mortal Kombat to get an idea.
I made changes to Volos' clothes but I'm still tinkering around. He wears red, skin-tight gear under his shoulder cloths that are littered with gems, but I might give him another type of gear to wear under it.

Volos does a little bit of necromancy but he isn't strong in that. His Combat skills are limited, but he utilizes them to the fullest to confuse his enemies followed by unfathomable spells.