Lessee... I once had a character named Tron (no, he is not related to TRON, despite what you may think), or to be more precise, he is still my character, except renamed, redesigned and in limbo. But his first name was Tron, I created him when I was somewhere around 12-13. Then I had a username 841tron, then it became 852tron (both of these are my usernames on ROBLOX, I am no longer there and I regret most of my time there), and then I decided to change it to TheTron852 when I was 15. So yeah, pretty much like that.
I also have another username, "y6Ep-K0T", but that one is mostly for the Russian community.