Mine is..... not terribly interesting. =w=;;

Way back in high school I was registering for a forum, and I wanted a new username. After several minutes of derping around, I remembered a certain fluffy blue dragon-bird from Pokemon, and tried to use that. I can't spell very well at all.
A few years of adding a's and moving things, Alteiriaa happened, and I've stuck with it since.
Advance years forward from that point, I was just creating my cat, tweeking until I was pleased with her, and got to the naming bit. Normally, I would use forementioned username, but then I'd need a second one. So I went eh, cut the name in half, and swapped the ends around.
Poof, Riaa Alteir!

Some of my alts I put slightly more thought into. Ryue Heirhyn (and even this may be misspelled. XD), who I made first really, was ment to be sorta close to Red Herring. Rumour Hasit is pretty self explainitory. Both are Lalas, and I really like them even if I didn't play with them much. ^^;

My chocobo is Worf. Partly because Star Trek, and partly because it amused me greatly to be traveling Worf Speed.