I've always had a problem with imagining this character, but I think I got pretty close to what I'd like him to look like in the books. Originally he was portraited with one of his artifacts - silver scaled gloves - but those looked horrid in my head, so I've changed that :]
Sylvester, from Wildbow's third web serial, Twig. He's... unlike any other character I've read. His thought patterns are unusual, and they only get moreso as the story goes on. It may well be Wildbow's best work, and Worm set a pretty high bar. Here's the link if you're interested.