The main nic I use is Kilroy. I first started using it back in 1996 when I was younger. However, I just googled Kilroy to see what came up and this is what I found: "Kilroy is a familiar image, whose origin is something of a mystery." I guess enough said. But really my original reasoning for the name was based on Michael Jordan's "Popcorn Reel" from the mid 1990's. Nike made a series of commercials of him supposedley playing Semi-Pro ball and killing people. This of course was when he was retired after his father's death.