The first message board I joined was made up primarily of fans of Planet Zebeth, which is a Metroid sprite comic. Having not yet settled on a name to use online, I wanted to pick something relevant to use. I took "Metroid Prime 2"(which hadn't been announced yet), changed it to "Prime 2.0" to make it more unique and catchy. In hindsight, the name was also ambiguous enough that it could be used pretty much anywhere without broadcasting myself as merely a Metroid fan who couldn't think up a name, which is why I kept it.
I don't care what you want Arf, I want to hear that story.