|Friends:||Ash Ketchum, Serena, Bonnie, Clemont|
|First Appearance:||Breaking Titles at the Chateau!|
|Voice actor:||Marc Thompson|
Chester is a character from Pokémon the Series: XY.
Chester met Ash Ketchum and his friends in a Pokémon Center, hearing them talk about the Battle Chateau. He then introduced himself to him and brought them to the Battle Chateau. He watched Nico's battle and was happy for his brother when he won and ranked up. After his brother's battle, Chester battled with Fletchling against Ash and his Pikachu. Fletchling and Pikachu battled hard against each other but Fletchling lost the battle, making Ash and Pikachu the winner. Later he also watched Viola's and Grant's battle, surprised by Onix's Rock Tomb. At the end of the day, Chester and Nico bid farewell to Ash and his friends.
His and his brother's Japanese name, Tesla, is a reference to the inventor of electricity Nikola Tesla.