Sophia

“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

“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

“Legion, cuneum formate!’ Reyna yelled. ‘Advance!’ Another cheer on Jason’s right as Percy and Annabeth reunited with the forces of Camp Half-Blood.

‘Greeks!’ Percy yelled. ‘Let’s, um, fight stuff!’ They yelled like banshees and charged.

Jason grinned. He loved the Greeks. They had no organization whatsoever, but they made up for it with enthusiasm.”
― Rick Riordan, The Blood of Olympus

“Tell the sun and stars hello for me.”
― Rick Riordan, The House of Hades