Togepi is a small, light-yellow Pokémon with a rounded body encased mostly in a white eggshell patterned with red and blue triangular markings. Only its head, hands, and feet emerge, its head distinguished by five crown-like spikes and small, black, oval-shaped eyes.
Discovered as an egg in Grampa Canyon, Togepi hatched and imprinted on Misty, forging a mother-child bond that defined its early life, with Misty acting protectively. Innately curious, Togepi often wandered into perilous situations, requiring rescue by other Pokémon like Pikachu, such as exploring unfamiliar areas and tumbling down hills or into hazards. Its limited battle skills reflected its infant status, initially restricted to moves like Metronome, Charm, and later Safeguard. Metronome's unreliability meant Togepi rarely battled, except once defeating Pikachu using Charm, exploiting Pikachu's reluctance to harm it.
In "Pikachu's Rescue Adventure," Togepi's accidental fall down a hole initiated the plot. Landing in a hidden valley, a group of Exeggcute mistook it for their missing egg and placed it in their nest. This prompted Pikachu and companions—Bulbasaur, Squirtle, Marill, Venonat, and Psyduck—to search for the lost Exeggcute to retrieve Togepi. During a fierce storm, Togepi remained passive in the nest while the Exeggcute and other Pokémon battled the winds and lightning to protect it. Bulbasaur ultimately rescued the nest using its vines, aided by a chain of Pokémon including Snorlax. After the storm, Chansey returned the missing Exeggcute, and the reunited group evolved into Exeggutor using a Leaf Stone, allowing Togepi's return to Misty.
Togepi's species absorbs compassion and joy from humans and other Pokémon, storing this happiness within its shell to share as good fortune, making it a symbol of luck—especially if one can make a sleeping Togepi stand. It retracts into its shell while sleeping or threatened, and early lore notes potential toxin release from its head spikes for defense. Despite its docile nature, Togepi occasionally displayed cleverness, activating hidden switches or calming distressed Pokémon like Wooper through rhythmic play.
Togepi's development culminated in the Mirage Kingdom arc. Transported to the Togepi Paradise sanctuary, it confronted the antagonist Colonel Hansen. Knocked unconscious during the struggle, it was revitalized by energy shared from other Togepi, triggering its evolution into Togetic. This new form used Safeguard to protect allies. Recognizing its duty to guard the paradise, Togetic chose to remain permanently, parting from Misty in an emotional farewell.