I'll just post all the usernames I use on various forums~ :3
Aegis - I came up with Aegis over a year ago, I believe. I had just come back to PC after a semi-break, and was trying to think up a new name. And for some reason, I thought of Zeus in Greek Mythology, and how he had the Aegis and all (was it him?) and I was like "Oh hey Aegis would be cool :D" and viola.
Aegizzle - A variant on Aegis, obviously. Back when I first started actively going in IRC... late January, early February, Ausuadriel would always greet me as "HAI AEGIZZLE!" annnd so from then on whenever Aegis was taken, I'd just use Aegizzle XD;
Aere - This was a nick name thought up by Allelujah Haptism a long time ago... like, March or something. She liked the "Ae" part of Aegis, and came up with Aere. I liked it so much, I switched to it briefly on PC, and still use it some places :>
Lisianthus - The name of a character from Shuffle! originally. I liked her in the anime, and I really liked the way her name was spelled, sooo I stole it :O
Primula - My favourite character from Shuffle! <3 She's so kickass it's not even funny, so I found it natural to steal her name every once in a while.
Roxas - My favourite character from the Kingdom Hearts series <3
Tael - This started when I joined another forum with Audy, at about the same time. He used the name "Tatl", so I was like "Heck, why not just use Tael" since they're both from Majora's Mask and all. Sooo yeah :>