Chansey

Chansey (Japanese: ラッキー Rakkii) is a -type Pokémon introduced in Generation I.

Physiology
Chansey is an Egg Pokémon. It has three strands of hair sticking out on each side. Chansey is entirely light pink, except for its egg and tips of its "Hair."

Mood
Chansey is an extremely brave and kind Pokémon and whatever its mood is, it's always smiling. It is known to bring anyone happiness.

Natural abilities
Chansey can have the ability Natural Cure or the ability Serene Grace. Natural Cure causes all of Chansey's status effects to be cured when Chansey is switched out. Serene Grace doubles the chances that secondary effects happen. Chanseys are supposed to bring happiness and are seen carrying a stone shaped egg and shares it with injured Pokémon. Chansey (and it's evolutionary line) also happens to have more items associated with it than any other Pokémon: the Lucky Punch, the Lucky Incense, the Lucky Egg, and the aforementioned Oval Stone.

Evolution
Chansey is the evolved form of Happiny, by leveling up Happiny while it holds Oval Stone during the day. Chansey evolves into Blissey when leveled up with max Friendship.

Anime
In the anime, Chansey are used as helpers for Nurse Joy in the Pokémon Centers, but are replaced with Audino in Unova.

In the DP series, Brock owns a Happiny that evolved into Chansey.

Trivia

 * Chansey shares the same species as Exeggcute.
 * Chansey's name comes from the japanese word chan which means miss or misses and the suffix -y, which usually means an adjective.