Togepi is a small, light-yellow Pokémon with a rounded, egg-shaped body partially encased in its shell after hatching. Its predominantly white shell displays distinctive red and blue triangular patterns, while only its head, stubby arms, and feet extend outward. The head features five crown-like spikes and thin, black oval eyes.

Known for a joyful and docile disposition, Togepi symbolizes good luck. Folklore claims happiness will come to those who make a sleeping Togepi stand upright. It absorbs positive emotions like compassion and pleasure from humans and other Pokémon, storing this happiness within its shell to share with kindhearted or needy individuals. Occasionally, its mischievous behavior inadvertently triggers chaos.

In the "Pikachu no Fuyuyasumi" special, Togepi initiates exploration during its trainers' absence, leading fellow Pokémon to a room with a decorated Christmas tree. Its curiosity sparks a chain reaction: after discovering party hats and food, the group’s playful antics escalate into accidental destruction. Togepi observes passively as Squirtle and Bulbasaur’s chasing topples the tree, and Pikachu’s Thundershock plunges the room into darkness, remaining a central yet inactive figure in the group dynamic.

Togepi fully retracts into its shell to sleep and releases toxins from its head spikes when threatened. Though media often highlights its capacity to channel emotional energy, this ability remains absent from the winter special. Instead, the special reinforces Togepi’s role as a narrative catalyst and emblem of innocence, aligning with its broader portrayal as a bearer of joy.