Well, for my in-game name, §Circuit±Breaker§, I drew this epic looking power-suit thing and wanted a cool name for it. The colors were electric blues, so there came the "Circuit", and because it has highly destructive powers when corrupted by Kkryonitte(something I came up with), came the "Breaker". The alt codes came in for no apparent reason. And because of the origin of "Breaker", if CircuitBreaker doesn't work, I use DarkCircuitBreaker because KkryonitteCircuitBreaker rarely fits. DarkCircuitBreaker is my current YouTube name, lol. And because I liked the name CircuitBreaker, I've included it in my book, Millennium Force and have given it to my main character, Magnus(who is named after me, also because "Magnus" means "great".
Carolcat came from my nickname being "Carol" and I love cats. So, "Carolcat".