Annie

“I’m coming back for you, Calypso,” he said to the night wind. “I swear it on the River Styx.”
― Rick Riordan, The House of Hades

“Frank heard a laugh behind him. He glanced back and couldn't believe what he saw. Nico di Angelo was actually smiling.

"That's more like it," Nico said. "Let's turn this tide!”
― Rick Riordan, The House of Hades

“Nico drank from the chalice, then offered it to Jason. "You asked me about trust, and taking a risk? Well, here you go, son of Jupiter. How much do you trust me?"

Frank wasn't sure what Nico was talking about, but Jason didn't hesitate. He took the cup and drank.”
― Rick Riordan, The House of Hades

“No," Frank said. "I'm only a centurion."

Jason cursed in Latin. "He means he can't control a whole legion. He's not of high enough rank."

Nico swung back his black sword at another gryphon. "Well, then, promote him!”
― Rick Riordan, The House of Hades