Well, it all started when I was still quite young, switching from finnish to english concerning my nick. Back then I was, as many might remember, Finnishsaint. It came by a song I really liked.
Years after that, I decided to go for something a bit shorter. As people called me Fin, and as a person with a patriotic spirit, I wanted to keep the "country tag" there. After that the ZeroX part pretty much came without real inspiration. Z and X just have always been letters of my prefer. And having some ability to make fun of myself, I kinda presented my skills in some games (being zero X'es = no hits)