The longer you're on the internet and in the world, the more likely it becomes that you run into other people using your made up name(s).
Before I made Vicious, I had the name Vyre. In XIV it's Vyre Vahzl. It was my Runescape name back in 2002, and an elongated version, Vyrerus too. I was Vyre on Asura in FFXI. I'd been using it as a fantasy name since Breath of Fire II in the mid-late 90s. Lotta people think I got it from the Dark Adonis, Vyers, from Disgaea (Love him, but no).
So I've been Vyre for about 25 years. It's even in my email addresses.
Nowadays there's tons of people with it as a first or last name. There's the Vyrewatch in Runescape. There's some black metal band named VYRE. There's a business association. There's all sorts of stuff with what I thought was mine, just all over the place. Recently in some famous novelist's work, he made some guy change his name to Vyre. Stormlight Archive, I guess?
It's always a trip.