There's a bit of a story behind mine. Long before the internet, folks communicated through telephone modems using systems called Bulletin Board Systems, or BBSs. I ran one of these, with quite the group of users. The users were split into a lot more security levels than we tend to use today, and in order to test the various levels, I needed a separate logon name for each level. I could have named them things like name_superuser, name_underage, etc, etc, but there were some reasons to avoid that - among other things, test accounts that are easily identified as belonging to the system operator tend to attract stupid messages. Anyway, I decided to use comic book characters because they tend to be easily remembered pseudo names paired with likewise easily remembered 'real' names - like Superman / Clark Kent or Batman / Bruce Wayne.
Grimjack / John Gaunt was one of the characters I borrowed - it's originally a comic book from First by John Ostrander and Timothy Truman, IIRC. Most of the rest turned out to be entirely too popular when the internet took over, and folks had to move from using names that were unique to systems holding at most a couple thousand members, to using names unique essentially global in scope. Grimjack, on the other hand, was just obscure enough that I haven't run into a lot of them.
