• English / United States: Cheren
• Japanese / Japan: チェレン
• Japanese (Romanized) / Japan: Cheren
• Japanese (TL) / Japan: Cheren

Cheren is currently the Gym Leader of Aspertia Gym. He is the main rival of the protagonist in Pokémon Black and White games but later becomes the Aspertia Gym Leader in the Pokémon Black 2 and White 2 games. He was first seen in the anime as a gym leader in the promotional video for Pokémon Black 2 and White 2 battling against the female protagonist.

Professor Juniper recommended that Ash Ketchum visit the a new gym had been built in Hiogi Gym. Cheren, a Pokémon Trainer from Kanoko Town had become a teacher at a Trainers School in Hiogi City. He recently got his qualification to become a Gym Leader and was working on building the Hiogi Gym. Despite the gym still being under construction, Cheren agreed to have an exhibition battle with Ash Ketchum.

Iris noted that Cheren looked a little downcast and didn't really seem to want to battle. An employee at the Trainers School told them that Cheren was a bit too serious and often gets lost in thought over a lot of things. He was worried because he thought Cheren was on the brink of losing confidence because Cheren thought he won't do a good job as a Gym Leader.

Many of the students came to see Cheren battle Ash Ketchum and cheered him on. Cilan noted that it was a truly excellent battle and all the children seemed to like seeing Cheren win. Cheren realized after the battle that he was thinking too much and that he would get more confident to become the Gym Leader he wants to be as time went on.