His signature voice is for Leapfrog.
One of Charles's friends said that he should audition for the voice of Mario. He decided to go along and do it, but almost didn't make it in time.
His dream is to work with the Starlight Foundation. He hopes that one day he could bring Nintendo Consoles and games to hospitals across America.
Charles is the voice of the Cat and Yertle the Turtle in The Cat in the Hat.
When he was growing up, he wanted to become a lawyer like his best friend.
Charles's favorite food is sushi.
He grew up in Barcelona, Spain and Paris, France.
Charles has provided voiceover acting for the boxers and the announcer in the Super NES title Super Punch Out!!.
His last name is pronounced Mar-tih-nay.
He attended the Drama School of London.
Charles is 6'3".
Charles has a recording studio in his house.
He makes up his own scripts for Mario games.
His friend encouraged him to try out voice acting.
Charles lives in Los Angeles, California.
Super Mario Sunshine is his favorite game.
He has worked with Koji Kondo on all Mario titles.
His favorite actors are Robert De Niro, Robin Williams and Colin Firth.
His versatile voice is used as over 100 cartoon characters in Sony Wonderfilm and Hallmark Cartoons.
He speaks fluent Spanish, French and some Italian.
On March 9, 2007, he appeared as a guest at the Video Games Live Concert in San Francisco, California, USA, entering on stage using his trademark Mario and Luigi voices.
Charles has blonde hair and blue eyes.
On September 15, 2006, he made a public appearance at the Game Store at Oxford Street, London.
On August 18, 2006, he appeared as a guest celebrity at Nintendo Power's annual event, Camp Hyrule.
He has worked as a voice actor in commercials, cartoons, and promotions.
His voice work appears in both English and Japanese-language versions of Mario games.
Charles has voiced Mario, Luigi, Wario, Waluigi, Toadsworth, Baby Mario, and Baby Luigi.
He started voicing Mario at video game trade shows.
Charles: I try to show a little humor, even in the dark side of a character.
Charles: I'm hoping when Mario's moustache is gray and he's about 102 years old, he will still be bouncing up and down saying, It's a me, Mario!
Charles: I love the way people respond to Mario, in real time and in the game situation.
Charles: Every Mario game gets better and better!
Charles: (talking about impressions of famous people) I dont do many impressions. Oh, but I can do impersonations of Mario!