I used "Deadeye" in the first online game I played, because the game only allowed 10 characters, and "DaBomb-Diggity" was too long(the name I used on the only forum I used before that). After using the name for a few years, I started getting into graphics, and started using the name in that way. I eventually adapted the name to include "Mister" after some guy on a gaming forum used it while saying I was a grammar Nazi.
I've also adapted Deadeye to DeadeyeGFX, DeadeyeTube, and probably a few variations of Mister -- Mr., Meester, etc.