Togepi is one of two baby Pokémons introduced in the same Generation as its evolution, the other being Riolu. In Attack of the Prehistoric Pokémon, Ash finds a Pokémon egg. It hatches into a Togepi in Who Gets to Keep Togepi?, and since Misty is the first thing the baby Pokémon sees, it believes Misty is its mother. It evolved and left Misty in A Togepi Mirage!. You can download this cute pokemon here.