I'd say 2/3rds of the people I know decently well know me as "Blaze" which was from "Blaze-senpai/san/sama" which came from "BlazikenPrince" which was reverted from "GameFreak19911991". Most of of the other 3rd know me as "Kuu" which comes from "Kuudere-senpai" or just "Kuudere". I prefer Kuu since its short and can't be nicknamed~
Most places I'll use something with "Kuu" in it, usually that by itself, or Kuudere-senpai if I can use -'s, in most games I play now I like setting "Kuupai", which is basically squishing the longer name together, but it gets decent reactions out of anyone that knows a fair bit about the language
My real name? I'm not telling anyone directly, you'll have to find it on your own.