Most of my RP experience was on ROBLOX, where the children outnumber the people who care about writing anywhere you look. They follow each others' bad examples and it turns into an uncontainable epidemic of embarrassing OCs. Someone beat me to this:

[quote=aia2022]
Back when I was still constantly roleplaying on roblox, there have been multiple cringe characters I have encountered. However, the most cringiest of them all was named Luna, had the ‘half vampire/half angle/half werewolf/half demon’ description and had the ‘hits you NO DODGE!!’ attack thing.

That was back in 2019 though and I’m sure they were new to roleplaying.
[/quote]
The fact that it's the majority of players means I can't exactly tell a story about an individual, and that's less fun. I'll do it anyway though. They'd put on their morph or their decal, input an RP nameplate, and the name reads like:

[color=darkgray]Alex/M/C:??/18/Bi/L:Killing/H:Stupid people/Hot/Tall/Shy/Demon/Dark past/Has powers/Blushes easily/MIRP[/color]
The standard was very slightly different for females.
[color=darkgray]Alice/F/C:Alex/19/Bi/L:Being alone/H:Stupid people/Cute/Kind/Shy/Demon/Dark past/Has powers/Blushes easily/MIRP[/color]

And you'd see that floating above their head all day, leaving you to always question: why do they never do what they like?
C for crush, L for likes, H for hates, MIRP for More In Role Play, though I'll bet many of the people who put those letters in didn't actually know what they meant. The name occupies a good portion of the screen when you look at them, and they tend to travel in herds, which means the words all overlap and you can't read a thing even if you want to (you don't).
This is especially funny when it's not an OC, but a canon character being [s]assimilated[/s] roleplayed. Foxy/M/C:Chica/18 was a popular one in FNAF games, where I started. I suppose Chica had a harem of sorts.

Granted, most RP games didn't even [i]have[/i] a (utilized) system for inputting a bio that isn't always-visible, but the rest of us took that as a reason to just not bother with a bio. You could assess who had some experience here by the fact that their nameplate literally just showed their name (Alex), a nickname (Dumbass Demon), a quote ("Don't touch my horns!"), a short physical description (A quiet demon boy, avoiding eye contact with you.), or didn't exist.

The infected herds played like children, spelled like children, and spent a lot of time xDing in OOC, especially happy to veer off into such behavior when I was in the middle of RPing with them (one must make do). You'd occasionally have strangers named Alex or Alice come up behind you and inexplicably stab you. Chaos and anarchy.

If I must talk about an individual, it'd have to be someone who wasn't part of the masses. That's rough. Let me think.
Oh, myself.

I was a contrarian and never picked up the usual name format and RP style. I'd say I took myself too seriously. I felt very quietly superior to the (fellow) children around me, especially when I stopped highlighting my actions in asterisks and instead narrated them like a real storybook. I had a few characters that I've kept and still like, but I developed simply too many and there were a lot of misses.
[list][*]Elizabeth, young white-haired daytime security guard at Freddy Fazbear's Pizza Palace. She had a - blood condition? I guess it was a freak kind of anemia? Her limbs would fall asleep one after the other, in a circling clockwise pattern, all the time. This is not a real medical condition. Also, I don't think she had a personality. That condition might be real.
[*]MMM, or Manage - Monitor - Maintain, a holographic AI manager at Freddy Fazbear's Pizza. I'd join the server and head to Parts & Services and narrate MMM inventing hardlight and upgrading itself and not doing much else besides, alone. I think I did this in three sessions, starting from square one each time. No one ever so much as looked. Not even my friends. I don't think hardlight tech existed in 1991, to be fair.
[*]Andrea, one of the dozen or so Pokemon OCs I invented consecutively for a short stretch in an effort to diversify personality types I used. She's the only one I remember, and it's not for any particular reason. She was a Sandslash. Her personality was: angry. Her backstory was: TBD. She got like an hour of playtime before I gave her up.[/list]
A good way to wrap this up might be talking about what I've learned from the failures of myself and others.

What I've learned is that characters' personalities need to be paid special attention if the character is going to be interesting, both to play with and to play as. Tall/Hot and Kind/Cute are not personalities (well, maybe - depends on your medium and audience). A made-up medical condition is not a personality. A power is not a personality (medium and audience, but it doesn't have to be alone). An emotion is not a personality.

It's pretty basic! But sometimes I worry that I still don't have it down.