The Little Mermaid (1992)

Season 3: Episode 5

King Triton, and the other residents from Atlantica are very happy to know that their hero Apollo is returning to Atlantica. Ariel and Flounder ask Triton who he is, and Triton explains. 20 years ago Atlantica was in a battle between the Octipins who contained a triton that was more magically than King Triton's triton. Apollo, in the vines snuck up on them and broke it. After the story Apollo appears. He and Ariel go on an adventure, but Ariel and Flounder soon find out that his victory over the Atlanticans was an accident. Ursula revives the Octipins and gives them 8 magic tritons, and now Apollo becomes a hero for real.