One day, I wanted a username for PSN. Thought Kaktus (Czech for Cactus) would be a neat enough word, but it felt too basic (and it would very probably be taken already), so I added -ovnik (suffix indicating that something grews on a tree) to it. Thus I became Kaktusovnik.
I used that name for like a month or two, and then realized it looks weird in English. When I was making a Gameloft Live account for MC4 multiplayer, I thought that Caktusovnik may be a better and more unique name.
The reason why my name is was CaktusovníkPD was because I already had a wikia account named Caktusovnik, but forgot its password and thus had to make a new account. PD at the end were just two random letters I threw in. But, as the time went, I began to dislike my í in the username, as well as the PD letters, and 'cause of Fandom's impersonation protection (I couldn't rename myself to Caktusovnik even after I renamed the original account) I chose to just throw a 2 at the end.