"hi my name is percy, i'm on the swim team, thats it there's nothing more you need to know about me now please don't socialize with me" percy who transitions to "OH HI LOOK THAT'S MY FRIEND YES I AM AN ENERGETIC AND SOCIAL PERSON" percy the moment somebody he actually knows comes into sight is such an untapped well of pure comedic potential.
at CHB, he has a bunch of friends and is really popular.
but in the mortal world he's basically invisible. Like. come on. literally his only mortal friend is rachel and that's because she's clearsighted. other than that he has zero mortal friends, literally nobody his own age who's not a demigod who knows him. in the senior year trilogy he doesn't even know his classmates' names.
like can you imagine nico, or leo or frank somebody who's always been under the impression that everybody likes percy walking into AHS and noticing that he's actually the weirdo emo kid in the corner
"what are you doing here"
"why are you such a fucking loser"