He is the close friend and interpreter of Gabriella, a deaf mermaid. He has spots on the sides of his head and a patch on his left eye. In his first appearance, he is shown with Gabriella, watching Ariel sing. After Ariel notices them, he explains Gabriella's disability and introduces himself. He is also the one to tell the tale of the Magical Wishing Starfish, and he accompanies them along the way. In his second appearance, he is visiting Atlantica with Gabriella and helps her stop Ursula's plot to take over the kingdom.
- "Hello. Don't stop singing, it looks beautiful."
- (translating) "My name is Gabriella. I'm deaf, I speak sign language. This is Ollie...uh...that's me."
- (translating) "I have a wish, too, Ariel. I wanna sing just like you."