"Percy scowled. "I-I know you." Nico raised his eyebrows. "Do you? - Rick Riordan

"Two hundred Romans, and no one’s got a pen? Never mind!"

He slung his M16 onto his back and pulled out a hand grenade. There were many screaming Romans. Then the hand grenade morphed into a ballpoint pen, and Mars began to write.

Frank looked at Percy with wide eyes. He mouthed: Can your sword do grenade form?

Percy mouthed back, No. Shut up.

"Nico," I said at last, "shouldn't you be sitting at the Hades table?"

He shrugged. "Technically, yes. But if I sit alone at my table, strange things happen. Cracks open in the floor. Zombies crawl out and start roaming around. It's a mood disorder. I can't control it. That's what I told Chiron. "

"And is it true?" I asked.

Nico smiled thinly. "I have a note from my doctor."

Will raised his hand. "I'm his doctor."

Save yourselves!” Percy warned. “It is too late for us!”
Then he gasped and pointed to the spot where Frank was hiding. “Oh, no! Frank is turning into a crazy dolphin!”
Nothing happened.
“I said,” Percy repeated, “Frank is turning into a crazy dolphin!”
Frank stumbled out of nowhere, making a big show of grabbing his throat. “Oh, no,” he said, like he was reading from a teleprompter. “I am turning into a crazy dolphin.”
He began to change, his nose elongating into a snout, his skin becoming sleek and gray. He fell to the deck as a dolphin, his tail thumping against the boards.
The pirate crew disbanded in terror.