When my kid Max was around 8 or 9, he had his buddy over (whose last name was Hannawalt) and they were playing James Bond.
The Hannawalt kid was playing Bond, and was code named 00Hannawalt duoble-o Hannawalt), and my kids was playing Q (the technogeek who invented all the gadgets? and called himself Qmax.
I liked the name and and it has been my on-line alterego on a number of sites for almost a decade.