It's my name
In English class we got back a paper that was marked, mine said "good job Matt" but the 2nd T wasnt crossed - Matl - my gf found it cute and soon I used it everywhere
I merged it with axolotl (fave animal) when discord shifted over to proper account names, so here we are!
When I worked at Zynga my title was Chief Game Designer. A friend from PR really wanted me to have a Twitter account (we're talking 2010 or so) and set one up for me. So I was ZyngaGameChief - but then I left in 2013. Asked followers what I should use & voila: TheGameChief.
It's my name