Clemont appears in Pokémon X and Y as a Gym Leader and a famous inventor. Trainers who defeat Clemont will receive the Voltage Badge, along with TM24 (Thunderbolt). At some early point in the game, he gives a device that solves electronic puzzles to Shauna. He first appears outside the Prism Tower with his little sister, Bonnie, lighting it up. According to the television show Gym Freaks, he is currently developing a machine that enables him to run faster, which is apparently his worst talent. It also states that he has secretly started to save money to go to the amusement park in the Unova region. He is described as a genius, having been credited with the invention of Super Training and the PSS. Despite this though, many of his inventions apparently fail to work.
"Oh! Thank you for coming. Allow me to introduce myself..."
"Bonnie! How many times do I have to remind you... It's not my own strength that matters, nor any other Trainer's. None of us would be here if it weren't for Pokémon."
"She's right about that, at least. Let's both do our best in battle."
Being defeated
"Your passion for battle inspires me!"
After being defeated
"Oh, Bonnie... When will you learn there's no shame in losing? I'm glad whenever I get to learn something new thanks to strong challengers like this boy/girl here. Now, to the victor go the spoils! This Voltage Badge belongs to you!"
"If you have a Voltage Badge, you will be seen as a friend and equal by any Pokémon up to Lv. 70. And here. Take this TM as well..."
"Arghhh! Bonnie, you--! ... ... ... The future is now, thanks to science! Behold the machine that gives: Technical Machines! ...I just wanted to be able to say it, OK? At least once."
"Look, I'm not... It's not like I'm just trying to make myself stronger or... ... ... ... All I'm trying to do is enjoy every day to the fullest with my Pokémon, while doing the science that I love with my inventing."
(post-game) "How did the world look after defeating the Champion? I really want to understand it. The way the world looks to a real Pokémon Champion... I'm trying to invent a machine that will let me see it for myself."
"Oh! I'm glad that we got to meet again like this!"
Being defeated
"Your passion for battle inspires me!"
After being defeated
(if giving the player an item) "The future is now, thanks to science! Power on, my new precious gift-giving machine... Mach 2!"
"I'm glad whenever I get to learn from other strong challengers. Thank you for the battle!"
After defeating the player
"Looks like my Trainer-Grow-Stronger Machine, Mach 2 is really working!"
Gym Freaks
April: "Hello! It's time for Gym Freaks, your source for the hottest news about hot Gym Leaders in Kalos. So... I'm now in front of the Lumiose City Gym! ... Eeek! Clemont has arrived! He's cute! So cute! His glasses make my heart twinge! Clemont has secretly started to save money to go to the amusement park in the Unova region. Awww... I want to donate money to his park fund! Oh... He went inside the Gym... That's all for the on-site report. Good-bye for now, everyone."
April: "Hello! It's time for Gym Freaks, your source for the hottest news about hot Gym Leaders in Kalos. So... I'm now in front of the Lumiose City Gym! ... Yeek! Clemont has arrived! He's cute! So cute! His glasses make my heart flutter! Clemont is also known as a genius inventor. But even such a genius has something he's not good at. That is...running. Lately, he's been developing a machine that enables him to run faster. Oh... He went inside the Gym... That's all for the on-site report. Good-bye for now, everyone."