UPNetwork -> Anime -> Kanto -> The Battle of the Badge
#63 "The Battle of the Badge"
The gang are back in Viridian City. Gary challenges the local gym leader just before Ash can, much to Ash's annoyance. While Ash is fuming, Togepi gets stolen by a Fearow, and then by Team Rocket, who take it to their boss inside the gym. While Gary battles Giovanni - winning two matches easily, before getting CRUSHED by Mewtwo - Team Ash look for Togepi. They find it inside Viridian Gym... and also find Gary and his fanclub, who are lying on the ground, barely conscious.
Gary tells Ash that he fought an 'evil' Pokémon, so powerful nobody could ever beat it... Ash goes to challenge the gym leader, and finds, to his surprise, that his opponent is Jessie! The trio from Team Rocket have briefly taken over the gym while Giovanni handles business elsewhere. Team Rocket sets up an elaborate system, where when a trainer's Pokémon takes a hit, that trainer will be electrocuted, and feel their Pokémon's pain.
Jessie uses Giovanni's Pokémon to fight with, and Ash gets hurt badly, but keeps on, and finally wins, Pikachu eventually wiping out five Pokémon in one shot! It ends up being Jessie who gets hurt (stupid Team Rocket, programming it so that their side would feel pain too!). Ash gets his Earthbadge.