Apollo

Apollo, known as Lester Papadopoulos in his most recent human form during the Trials of Apollo, is the Greek god of the sun, light, healing, disease, plague, music, art, poetry, archery, reason, knowledge, truth, prophecy, and protection of young. He is the twin brother of the goddess Artemis, and they are together known as the "twin archers". Apollo is described as arrogant, self-centered, and cocky, as is typical among the gods. However, in The Trials of Apollo his personality progressively changes as he starts to feel guilt and sorrow, becoming more empathetic and kind. This is especially shown in Chapter 27 of The Hidden Oracle when he sings about Daphne and Hyacinthus, the most famous of his lovers, taking the responsibility for their deaths. However, he does have a big ego. He has been obsessed with haikus ever since he visited Japan and also appears to obsess over other kinds of poems, depending on where he visits. In The Titan's Curse, Zoë Nightshade briefly mentions that after Apollo visited Ireland, he obsessed over limericks for a time. He loves his 'little' sister Artemis, even though they often clash, as he is the more laid back, less serious twin; he is always hitting on her Hunters as well, though she has forbidden it, and they refuse to be charmed by him due to their oath. He was also shown to have good relations with his demigod relatives, such as Percy, as demonstrated by how he illegally helped him during one of his quests (though a prominent reason for his help would be because Artemis was in grave danger) and offering to teach him archery. Apollo was also revealed to have a tendency to brag about his previous accomplishments.