The AI opponent from Hexxagon, an old DOS puzzle game, was called Craniac. On easy, he was represented by a lightbulb. On medium, he was represented by a lightbulb with glasses. If you played him on hard, he had glasses AND a bowtie. I changed the C to a K in order to prevent any possible copyright infringement issues (I'm slightly paranoid) and also because K is an infinitely cooler letter than C. And I don't ever capitalize it, except when I'm forced to do so, as in World of Warcraft. Call me a copycat of e.e. cummings, I still like it better lowercase.
I changed my UT name to Landslide when I found out that a lot of people thought my name was a reference to chronic/cranic, slang terms for marijuana. And Brooklyn_Pete, the leader of LOB, never could pronounce it anyway.
I publish all my musical compositions under the name Shazbot, because I liked the reference to Mork and Mindy and because the first PC shooter I was really into was Tribes 2.