I never really bought the whole 'redeemed mean girl' thing for Clarisse until I saw her interactions outside of Percy's POV. Her conflict with Silena Beauregard cuts the deepest, I think. It's not just rivalry over the Ares cabin's reputation or Beckendorf; it's this foundational betrayal. Clarisse operates on this blunt, brutal honor code—strength, loyalty to your siblings, winning fair. Silena's deception, especially using their friendship, hits every one of those principles.
Then you have her dad issues, which are huge. Ares expects unthinking ferocity, but Clarisse has this stubborn, almost strategic pride. She won't be a mindless weapon. That's why butting heads with Percy is so fun—they're mirrors. Both stubborn, both value personal strength, but his is rooted in protecting friends, hers in proving herself. By the end, her conflict shifts from external clashing to an internal one: how to be a leader her cabin respects without becoming her father. The moment she refuses to fight the drakon without her armor isn't just pride; it's her defining a new kind of honor.
Her dynamic with Annabeth is low-key one of my favorites. It's all mutual, grudging respect buried under layers of 'I could take you.' No deep friendship needed, just two warriors who get the job done.