Arthur

“Afterward, I had the last laugh. I made an air bubble at the bottom of the lake. Our friends kept waiting for us to come up, but hey-when you are the son of Poseidon, you don't have to hurry. And it was pretty much the best underwater kiss of all time.”
― Rick Riordan

“What if it lines up like it did in the Trojan War ... Athena versus Poseidon?"
"I don't know. But I just know that I'll be fighting next to you."
"Why?"
"Because you're my friend, Seaweed Brain. Any more stupid questions?”
― Rick Riordan, The Lightning Thief

“It's him," I said. "Typhon."
I was seriously hoping Chiron would say something good, like 'No, that's our huge friend Leroy! He's going to help us!”
― Rick Riordan

“Grover was sniffing the wind, looking nervous. He fished out his acorns and threw them into the sand, then played his pipes. They rearranged themselves in a pattern that made no sense to me, but Grover looked concerned.
"That's us," he said. "Those five nuts right there."
"Which one is me?" I asked.
"The little deformed one," Zoe suggested.
"Oh, shut up.”
― Rick Riordan, The Titan’s Curse