Dragoniss is something that I've had since I was 13.
It comes from the title of a painting that I did for art class in school. It was called "The Dragon and the Dragonis" It was of two dragons, one male and one female flying through the air. I had also done a lot of looking into dragons, at the time I was really big into them. I had quite the collection of dragon statues, sadly I had to sell them all due to moving a long ways and not having room for them. I was trying to think of a name for my first Gaia Online account and Dragonis came to mind. Sadly the name was taken so I just added an extra S at the end and the name has stuck for 7 years. I use it for basically everything, so in case I wanted people to know where I am they know who to look up.
Though now I have begun to break that habit. I'm trying to come up with new names now. On some places, like my youtube, I've gone by The Antagonist Green, because Green is my favorite antagonist and I like to Role Play as his character. I've also just started using Cafemocha on Smogon/Showdown, because I like the paring and...Cafemocha just sounds delicious. Plus I wanted a name that sounds a bit more mature and doesn't have to be looked at in terms of Pokemon. While I see it as a Pokemon term, someone else that doesn't know about the paring or Pokemon in general won't know the difference.