lore

“Nico scowled. ‘It’s none of your business, but I don’t belong. That’s obvious. No one wants me. I’m a child of –’
‘Oh, please.’ Will sounded unusually angry. ‘Nobody at Camp Half-Blood ever pushed you away. You have friends – or at least people who would like to be your friend. You pushed yourself away. If you’d get your head out of that brooding cloud of yours for once –”
― Rick Riordan, The Blood of Olympus

“Nico wasn't sure whether to kick himself or Will Solace. If he hadn’t been so distracted bickering with the son of Apollo, he would never have allowed the enemy to get so close.”
― Rick Riordan, The Blood of Olympus

“I am Nico Di Angelo, son of Hades. I control the shadows. They do not control me.”
― Rick Riordan, The Blood of Olympus

“Then there was Nico di Angelo. Dang, that kid gave Leo the freaky-deakies. He sat back in his leather aviator jacket, his black T-shirt and jeans, that wicked silver skull ring on his finger, and the Stygian sword at his side. His tufts of black hair struck up in curls like baby bat wings. His eyes were sad and kind of empty, as if he’d stared into the depths of Tartarus—which he had.”
― Rick Riordan, The House of Hades