Odin Hammer

Odin is a main character of the Johanis Comics, and the secondary antagonist of the Snowball Fight series. He has a bush of curly hair and small glasses that obscure his eyes, but is most commonly seen as being faceless after getting his skin melted off in a house fire, showing nothing but his skull. He most likely has a lot of his internal organs left, but he was once seen drinking coffee with all the liquid pouring out the back of his head, meaning Mind Guy has enough magic to not only reanimate a dead corpse, but give personality to it as well.

Kevin and Odin are the nerd buddies, both being nerds and both being buddies. Their relationship is obviously threatened when Odin becomes a villain, but the two make up eventually.