Ihephaestus

“Too bad Jason wasn’t a metal automaton. At least then Leo would have some idea of how to help his best friend. But with humans … Leo felt helpless. They broke way too easily.”
― Rick Riordan, The Blood of Olympus

“Correct." Kekrops sounded bitter, like he regretted his decision. "My people were the original Athenians--the gemini."
"Like your zodiac sign?" Percy asked. "I'm a Leo."
"No, stupid," Leo said. "I'm a Leo. You're a Percy.”
― Rick Riordan, The Blood of Olympus

“Like the zodiac sign?' Percy asked. 'I'm a Leo.'
'No, stupid,' Leo said, 'I'm a Leo. You're a Percy.”
― Rick Riordan, The Blood of Olympus

“Hey." Leo grinned, which was unnerving in the flames, his teeth like molten silver ingots. "I told you I had a plan. When are you going to trust me? And by the way- I love you guys."
Festus claw opened, and Jason and Piper fell.
Jason had no strengh to stop it. He held on to Piper as she cried Leo's name, and they plummeted earthward.”
― Rick Riordan, The Blood of Olympus