I'm pretty sure I regret anything and everything from when I first started getting on the computer and into chat rooms WAAAAAAAYYYYY back in the day. With everyone trying to make their names look cool by adding xXX XXx to them or different versions.
I went through a phase where I used usernames such as LunarTheUmbreon or EvieTheEevee.
Fun Fact..?: LunarTheUmbreon was my old Minecraft username. :p
I don't necessarily 'regret' making these names but it was.. kind of cringy.
Another one would be Kittylovesme, but I was like 8 when I made that LOL
I forgot half my usernames on here but on another forum back when I was 15 and edgy I used "Dementia" :// Even though it's actually a serious illness but I was dumb.
Then I joined a YuGiOh forum and went by "KaisersGirl" because I liked Kaiser Ryo and really it was a "fangirl" phase of my teen years before accepting that I'n non binary.
You will reap what you've sown.
My redemption lies in your demise.