Isela

“In that moment, he chose Greek. He threw in his lot with Camp Half-Blood-and the horses changed. The storm clouds inside burned away, leaving nothing but red dust and shimmering heat, like mirages on the Sahara.”
― Rick Riordan, The House of Hades

“I set Nico on guard duty with Beckendorf and the Stoll brothers, figuring he'd be safely out of the way.
...
"What's happening?" Nico demanded, trying to climb up next to me.”
― Rick Riordan, The Titan’s Curse

“Nico di Angelo ran up to me with a big grin on his face.
"Percy, this is awesome!" His blue-feathered bronze helmet was falling in his eyes, and his breastplate was about six sizes too big. I wondered if there was any way I'd looked that ridiculous when I'd first arrived.”
― Rick Riordan, The Titan’s Curse

“It's leviOsa, not levioSA!”
― J.K. Rowling, Harry Potter and the Sorcerer's Stone