Apollo is an all-around serious male, only really relaxing by lazing around in the sunlight, listening to music or being around his sister, Artemis. He's a stickler for upholding the truth, and generally takes it upon himself to point out people's lies. Along with this, he's also incredibly curious, observing everything (including medics and nurses) to learn as much as he can. He learns a little more slowly than most, but he has a brilliant memory and the knowledge sticks, allowing him to do things more skilfully with less practice.