Misty's Togetic/Anime/History/OS

Kanto
Togepi was found as a Pokémon Egg by in Grampa Canyon in Attack of the Prehistoric Pokémon.

In Who Gets to Keep Togepi?, Ash,, , and fought over the Egg and competed in a  tournament to determine who would be the eventual owner. When the Egg hatched into, the first thing it saw was Misty, and it subsequently chose her as its , thinking that she was its mother. This was in spite of the fact that Ash officially won the tournament.

In The Battle of the Badge, Ash was startled by Togepi and accidentally sent it flying away, where it eventually ended up in the hands of Team Rocket. They duly presented it to who was unimpressed as Togepi couldn't actually do anything remarkable at the time. Togepi managed to slip away and soon reunited with Misty.

Orange Islands
Although Togepi appeared harmless, it sometimes used to get out of dangerous situations. The first time it happened was in Pikachu Re-Volts. Butch and Cassidy's was using Metronome to attack Ash and his friends. Misty's Togepi began using it, causing an explosion that sent Butch and Cassidy flying. It happened again in In the Pink. A was about to charge the group when Togepi used  to use. It also used the move later in the episode to stop a attack from a  by using.

Johto
Despite the fact that Misty knew Togepi could battle, she only used it one time to battle Ash. In The Totodile Duel, Ash was using his to battle Misty for ownership of a. Misty used Togepi, because she knew Pikachu would never attack it, as Pikachu would often babysit it. Using, Togepi ended up defeating Pikachu.

In Houndoom's Special Delivery, Togepi was separated from Misty and the rest of the group for some time, after it used Metronome to teleport itself away from James's Weezing. A rescued it from a tree and the two became good friends, sharing a sad goodbye when it was time for Togepi to leave. In An EGG-sighting Adventure!, it used Metronome again to teleport Ash's Egg away from.