Kosain

“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

“I'm the Super-sized McShizzle, man!" Leo said. "I'm Leo Valdez, bad boy supreme. And the ladies love a bad boy.”
― rick riordan, The Mark of Athena

“Blackjack," Percy said, "this is Piper and Jason. They're friends."
The horse nickered.
"Uh, maybe later," Percy answered.
Piper had heard that Percy could speak to horses, being the son of the horse lord Poseidon, but she'd never seen it in action.
"What does Blackjack want?" she asked.
"Donuts," Percy said. "Always donuts.”
― Rick Riordan, The Mark of Athena

“Whenever Percy stopped by to see [Annabeth], she was so lost in thought that the conversation went something like this:
Percy: 'Hey, how's it going?'
Annabeth: 'Uh, no thanks.'
Percy: 'Okay...have you eaten anything today?'
Annabeth: 'I think Leo is on duty. Ask him.'
Percy: 'So, my hair is on fire.'
Annabeth: 'Okay, in a while.”
― Rick Riordan, The Mark of Athena