Because Percy is now more comfortable in who he is, he’s able to call on all his talents to best Ares. The cold, hopeless presence, however, does call Ares off—and this suggests that it’s in this presence’s best interest to let Percy win right now. As Percy confronts the Furies for the last time, he also begins to recognize the ways in which they’re both human and employees of Hades. It’s their job to make his life miserable—but they’re not necessarily malicious. They’re just doing their job, and they can be honorable about it.