Hercules: Zero to Hero (1999)

The film briefly gives Hercules' history after defeating Hades for good, in which he marries Meg and revisits his teenage years. In particular, it shows an adolescent Hercules's enrollment and the beginning of his adventures at the Prometheus Academy, a school for gods and mortals, which Hercules supposedly attended during the time when he was training to be a hero with his mentor, the satyr Philoctetes.