Do you have a character name you tend to repeat across games? Whether it's the same archetype across games, a running joke name, or even just one you pull when you can't think of something on the spot.
I have used the name "Rictus" for an NPC on a 4e game, as my generic player name in a handful of video game RPGs, wrote him as a character for an abandoned dungeon world game where he would have been a lich, used it for my FF14 character name, and I used the name for a 3.5 character I never got to play.
I first heard the name from my Shadowrun GM in 2008, and for some reason it stuck with me and I just bounce that name around on things when I don't want to use Jama.
I am caught between chronic exhaustion waves so I haven’t the energy to go into great detail tonight but I don’t just reuse the names, I’m accidentally and organically developing my own personal commedia dell’arte of similarly named and themed characters who are explicitly not the same character (not counting evil faerie Alan Rickman and occasional versions of Nynaeve, like the Demiverse Nynaeve) but share a name and/or an archetype and/or a twist on one or the other for easy personal recognition
Many of them don’t reoccur with the same RPG group and thus it doesn’t usually look like I’m “reusing” characters but it really helps take some creative load off my DM brain to have the Troupe of Signature Characters and Usual Suspects
I have a character named Kellas who has appeared in every game I've played for the last few years. Fairly major NPC. Anyway, I regularly use some variation on Grey for him. My players know this...
This still never figure it out.