Mary

“He’d perfected his wolf stare over the last few months–a look that said: However bad you think you are, I’m worse. After strangling sea monsters and running over gorgons in a police car, Percy wasn’t scared of gangs. Pretty much nothing in the mortal world scared him anymore.”
― Rick Riordan, The Son of Neptune

“Then he groaned, "Food," and I knew there was hope.”
― Rick Riordan, The Lightning Thief

“The most horrible thing about her? She was still holding her big platter of free samples: Crispy Cheese 'n' Wieners. Her platter was dented from all the times Percy had killed her, but those little samples looked perfectly fine. Stheno just kept toting them across California so she could offer Percy a snack before she killed him. Percy didn't know why she kept doing that, but if he ever needed a suit of armour he was going to make it out of Crispy Cheese 'n' Wieners. They were indestructible.
'Try one?' Stheno offered.”
― Rick Riordan, The Son of Neptune

“Let us find the dam snack bar,” Zoë said. “We should eat while we can.”
Grover cracked a smile. “The dam snack bar?”
Zoë blinked. “Yes. What is funny?”
“Nothing,” Grover said, trying to keep a straight face. “I could use some dam french fries.” (The Titan’s Curse - chapter 14 page 208)”
― Rick Riordan, The Titan’s Curse