.

“We need music," Nico said. "How's your singing?"
"Um, no. Can't you just, like, tell it to open? You're the son of Hades and all."
"It's not so easy. We need music."
I was pretty sure if I tried to sing, all I would cause was an avalanche.”
― Rick Riordan, The Last Olympian

“As for my brothers," Zeus said, "we are thankful"-he cleared his throat like the words were hard to get out-"erm, thankful for the aid of Hades."
The lord of the dead nodded. He had a smug look on his face, but I figure he'd earned the right. He patted his son Nico on the shoulders, and Nico looked happier than I'd ever seen him.
"And, of course," Zeus continued, though he looked like his pants were smoldering, "we must...um...thank Poseidon."
"I'm sorry, brother," Poseidon said. "What was that?"
"We must thank Poseidon," Zeus growled. "Without whom . . . it would've been difficult-"
"Difficult?" Poseidon asked innocently.
"Impossible," Zeus said. "Impossible to defeat Typhon.”
― Rick Riordan, The Last Olympian

“Images flashed through his mind. He saw Nico and his sister on a snowy mountain cliff in Maine, Percy Jackson protecting them from the manticore. Percy's sword gleamed in the dark. He'd been the first demigod Nico had ever seen in action. Later at Camp Half-Blood, Percy took Nico by the arm, promising to keep his sister Bianca safe. Nico believed him. Nico looked into his sea-green eyes and though, How can he possibly fail? This is a real hero.”
― Rick Riordan, The House of Hades

“This is so cool!" Nico said, jumping up and down in the driver's seat. "Is this really the sun? I thought Helios and Selene were the sun and moon gods. How come sometimes it's them and sometimes it's you and Artemis?"
"Downsizing," Apollo said. "The Romans started it. They couldn't afford all those temple sacrifices, so they laid off Helios and Selene and folded their duties into our job descriptions. My sis got the moon. I got the sun. It was pretty annoying at first, but at least I got this cool car."
"But how does it work?" Nico asked. "I thought the sun was a big fiery ball of gas!"
Apollo chuckled and ruffled Nico's hair. "That rumor probably got started because Artemis used to call me a big fiery ball of gas.”
― Rick Riordan, The Titan’s Curse