Marie

“Nico had proven himself in other ways. He'd kept the camps' secrets for the best of reasons, because he feared a war. He had plunged into Tartarus alone, voluntarily, to find the Doors of Death. He'd been captured and imprisoned by giants. He had led the crew of the Argo II into the House of Hades…and now he had accepted yet another terrible quest: raking himself to haul the Athene Parthenos back to Camp Half-Blood.”
― Rick Riordan, The Blood of Olympus

“Yeah, okay. But, Nico, you do choose how to live your life. You want to trust somebody? Maybe take a risk that I'm really your friend and I'll accept you. It's better than hiding.”
― 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

“He’s a restless soul, always looking for another chance to drive,’ Nico said. ‘The last few years, he’s been my driver whenever I need one.’
‘You have a zombie chauffeur,’ Leila said.”
― Rick Riordan, The Blood of Olympus