I'm pretty sure I said my story, but might as well tell it again.
I started out playing Runescape (yeah yeah, get over it) as every kid plays it one way or another. I started out with a character that I named after myself and a number after it, stupid I know, but I was young and hardly knew anything about the internet.
One day someone said my name/username and I didn't know if they meant me in real life or the game me, so I panicked and logged off. I went over to my dad, asked him to make me a new account (I liked Runescape at the time!) and he went over and created the account.
The name of the account he created was Jumplion.
And thus, my internet double was formed.