Mr. Mime is a Pokémon bred for punching. It was used to train itself's and Clayton's discipline and focus. When Ash's Buizel first fought it, Mr. Mime displayed cunning tactics and defeated it easily. However, when Ash trained his Buizel to use Ice Punch, he demanded a re-match, which Clayton accepted. While Mr. Mime had the upper hand, it started raining and Buizel's Swift Swim was activated, just in time to use Ice Punch and defeat Mr. Mime.