" Aphros nodded, a glint of pride in his eyes. “We have trained all the famous mer-heroes! Name a famous mer-hero, and we have trained him or her!”
“Oh, sure,” Leo said. “Like…um, the Little Mermaid?”
Aphros frowned. “Who? No! Like Triton, Glaucus, Weissmuller, and Bill!”
“Oh. ”Leo had no idea who any of those people were. “You trained Bill? Impressive. "

― Rick Riordan , The Mark of Athena (The Heroes of Olympus, #3)