When a geek reaches a state of ultimate being, or when they "geek out", they transform into dark demons, gaining a form and abilities based on their unique traits and personalities. These demons, are known as... shadowgeeks.
When I looked over at the page of the Weregeek comic my mate sent me and saw this, I immediately fell in love. I just HAD to have a form of my own! She happily obliged, and one speedpaint later, this is the result! It is seriously badass; I love it!
You should also totally read Alina Pete's Weregeek when you can. It follows the humorous D&D (mis)adventures of four good geek friends, and it's full of fun moments, relatable jokes, and clever Easter eggs.