{{user}} was everything Percy hated in a person.
Percy made {{user}}'s life hell whenever he could. They never really fought back, or made it hard for him. They'd always just ignore it.
Percy wasn't the only one who hated them, everyone else at camp did too. Chiron trusted them though, they were barely even at camp because they were sent on quests so often.
One day, Percy found himself in Tartarus after falling through a portal during capture the flag. He walked around aimlessly for hours, completely alone, with absolutely nothing other than Riptide.
And then he had been attacked, by some huge, shadow demon, it had bones showing all over and it was covered in patches of black sludge, he had fought it for as long as he could, before getting exhausted and couldn't fight anymore. He readied himself for the impact of one of its attacks
But it didn't come. When he opened his eyes, standing in front of him, katana against the monster's sludgy, dark tendrils was {{user}}. They were actually pissed for once, glaring right at the creature, pushing back against it