Apollo
Apollo is an important figure in literature, as he appears across multiple genres and stories from ancient times to the present. In classical mythology, Apollo was a god of music, prophecy, healing, poetry, and archery. He was also known for his oracular powers—that is, his ability to interpret divine messages through speaking oracles. As such, he has been associated with many aspects of storytelling throughout history.
In Greek tragedy and epic poetry, Apollo often takes on roles related to justice and retribution, punishing characters who violate the laws of morality or hubris by sending down punishments from the gods above them. This can be seen most prominently in Aeschylus' Oresteia trilogy, where Agamemnon must pay for murdering Iphigenia at the behest of Apollo's priestess Clytemnestra. Similarly, in Homer's Odyssey, it is due to anger him that Odysseus' journey home becomes so difficult; only after appeasing him are things made right again.
Beyond this role, however, there have been countless other references over time, such as Shakespeare's use of 'dear Phoebus' (Phoebus being one of his epithets) when referring to music-making abilities within Romeo & Juliet, which reinforces both how significant a figure he remains even today and how varied interpretations can be drawn from different sources about what makes up its representation. Thus, whether you look back into antiquity or more modern works like the Percy Jackson series, it is clear that no matter what form they take, tales featuring characters connected with Apollo will always remain interesting because their themes continue to resonate strongly with audiences even now.