Clemont is known for being the Gym Leader of Lumiose City, and also the city's famous inventor. Someday, he hopes to become known around the region. And hopefully soon, worldwide. Clemont has a great deal of Pok??mon knowledge and often shares this information with his friends when necessary.
Clemont is an intelligent inventor who takes pride in his gadgets and science in general, and although his devices usually do what he wants them to do, they only function for a few minutes or even a few seconds before exploding. Whenever he introduces one of his inventions, his glasses shine and he usually says, "The future is now, thanks to science!" demonstrating his anticipation of situations that require the help of his machines. He claims to have an invention for just about every situation the group find themselves in, regardless of the nature of said situation.
Even if he takes pride in his accomplishments, Clemont has a tendency to be very modest around people outside of his close acquaintances and friends.