Nico

“Your voice is your identity. If you don't use it, you're halfway to Asphodel already.”
― Rick Riordan, The Blood of Olympus

“I am the son of Hades. I go where I wish. The darkness is my birthright.”
― Rick Riordan, The Blood of Olympus

“Then she did something so unexpected Nico would later think he dreamed it. She walked up to Nico, who was standing to one side in the shadows, as usual. She grabbed his hand and pulled him gently into the firelight. ‘We had one home,’ she said. ‘Now we have two.’ She gave Nico a big hug and the crowd roared with approval. For once, Nico didn’t feel like pulling away. He buried his face in Reyna’s shoulder and blinked the tears out of his eyes.”
― Rick Riordan, The Blood of Olympus

“Nico was devastatingly alone. He’d lost his big sister Bianca. He’d pushed away all other demigods who’d tried to get close to him. His experiences at Camp Half-Blood, in the Labyrinth and in Tartarus had left him scarred, afraid to trust anyone.”
― Rick Riordan, The Blood of Olympus