Andre is a Pokémon Trainer that was visiting Don George's Battle Club in Karakusa Town. His name actually appears on the computer screen in the
anime language when
Ash Ketchum and
Iris noticed he was currently battling. His name is not in the Japanese closed captions or credits though.
As
Ash Ketchum and
Iris walked into the battle area of the club, they watched as
Andre defeated
Urara's Servine.
Andre noticed
Ash's Pikachu and he asked
Ash Ketchum to have a battle with him which he agreed to.
Ash's Oshawott came out of its Poké ball just as the battle was about to start but
Ash Ketchum recalled it.
Andre sent out his Futachimaru again to battle even though it has just finished battling with
Urara's Servine and even though it had a type disadvantage against
Ash's Pikachu. The two of them battle intensely and despite
Ash's Pikachu type advantage,
Andre's Dewott was able to hold its ground and do significant damage with its
Razor Shell. The battle concluded in a draw though as Battle Club's emergency alarm went off.