During the big Dubstep trend about 7-9 years ago, there was a very popular artist named "SKisM". His music was one of the best next to Flux Pavilion and Skrillex.
My username before that was "LoLMeCrazy" so I definitely needed a new ign, so I went with "SKiisM" since I was a huge fan of his music. Barely anyone recognizes the name since the artist phased out awhile ago too.
My username comes from my DevianArt account, but I don't remember how did I get the idea.
I just remember that it was a different username but it was already taken so I said: "Let's just change a few things".
And it end up being Niktushi. lol
eat cum and die
My friends gave me the nickname "Rappe" on 1st grade and then I turned it into Rabbe and now it's Rabbecito just for the memes. Mostly I use Rabbe on other platforms like Discord etc.
When I first got a Minecraft account, I was very into chemistry, and I wanted a unique nickname. So, I came up with 'Minecraftium Sulphate', which I shortened to 'MCSulphate'. After playing for a while and joining some communities, I ended up being called 'Sulphate' by most, which is what I'm called on everything except here, since I cannot take that name.