He is one of the seven main characters of the Heroes of Olympus Series by Rick Riordan. This Series is loosely based on Greek and Roman Mythology. It is also a follow-up series of the Percy Jackson and the Olympians.
Anyone interested in World Mythology can give it read; it has humour, action and is very fast paced.
I try not to think. It interferes with being nuts -Leo Valdez
Leo Valdez is a character very close my heart, he is sarcastic, sweet and innocent at the same time. He carries a lot of burden, heartache but never shows it, he just tries make everyone laugh and make the moment between the rival protagonists (Percy and Jason) light. His chapters (the book is written in different PoVs) are the best ones. He has a fire-breathing metal dragon named “Festus” (Meaning happy in Latin :D ).
One Incident from the Mark of Athena(Book 3 of the Series)
Hazel Levesque and Leo Valdez met Narcissus at the Salt Lake in Utah, when they were looking for Celestial Bronze needed for the repairs of the damaged Argo II. They found that Narcissus was using it as a mirror to admire his own reflection and was not willing to give it up or exchange it. Because of this, Leo came up with a plan to steal the shield out from under him. A nymph known as Echo, who still loved Narcissus and only wanted to help him, agreed to the plan as it could snap him out of his curse. While Leo Valdez and Echo managed to distract Narcissus, Hazel Levesqueused geokinesis to pull the metal shield under the earth toward her.
Excerpt from this story -
Narcissus turned and scowled at Leo. “Who are you?”
“I’m the Super-sized McShizzle, man!” Leo said. “I’m Leo Valdez, bad boy supreme. And the ladies love a bad boy.”
“Gods of Olympus.” Piper stared at Leo. “What happened to you?”
His hair was greased back. He had welding goggles on his forehead, a lipstick mark on his cheek, tattoos all over his arms, and a T-shirt that read HOT STUFF, BAD BOY, and TEAM LEO.
“Long story,” he said.”
“Oh my god, I am so awesome!" Leo bellowed.
"So awesome!" Echo yelled back.
"He is funny," a nymph ventured.
"And cute, in a scrawny way," another said.
"Scrawny?" Leo asked. "Baby I invented scrawny. Scrawny is the new sizzling hot.”
His many titles include repair boy, hot stuff, bad boy supreme and of course join Team Leo .
Wanna know more about Leo, or who the hell are Hazel,Piper or Echo ?
Read The Lost Hero (Book 1 of Heroes of Olympus Series).It is a five book series and after you are done, you will definitely want more!