Blissey has a large, ovoid body with a pink upper body and white lower body. It has hair-like curls on either side of its head. Blissey can use this fluffy fur to sense sadness. White, wing-like tufts grow from its hips and shoulders, creating the impression of a dress. A small, pink pouch on its belly holds a single egg. Eating this egg brings feelings of happiness and make the person pleasant and caring. Its stubby arms and feet are pink and lack any digits. A compassionate Pokémon, it will rush to anyone feeling sad or ill and attempt to nurse him or her back to health. Its evolutionary line is the only one capable of learning Softboiled. Blissey is a female-only species with no male counterpart. An urban Pokémon, it is rarely seen in the wild.
Blissey, the Happiness Pokémon. It is kindhearted and loves helping people. Blissey is the evolved form of Chansey.
In the manga
Blissey in Pokémon Adventures
In the Pokémon Adventures manga
A Blissey captured by Crystal and lent to Emerald for his Pike challenge appeared in the 27th volume. With her high Special Defense aided by a suitable nature served much use for the boy, and though she was eventually defeated, she was able to revitalize another borrowed Pokémon, a Rapidash, using Softboiled, with which the queen's Seviper was defeated by a devastating Overheat, winning him the match.
Blissey senses sadness with its fluffy coat of fur. If it does so, this Pokémon will rush over to the sad person, however far they may be, to share an egg of happiness that brings a smile to any face.
If it senses sadness with its fluffy fur, a Blissey will rush over to the sad person, however far away, to share an egg of happiness that brings a smile to any face.
Blissey's HP base stat is the highest legitimate single base stat out of all Pokémon, at 255, giving her the ability to have the highest HP of any other Pokémon in the games (with a total of 714 HP if her HP stat has an effort value of 252 and an individual value of 31). Her HP base stat of 255 is the highest base stat possible, as all base stats are a single byte, the maximum value of which is 255 (1111 1111).
Her pre-evolution holds second place, coming in at 250.
Blissey has the highest base experience yield out of any Pokémon, with 608 (255 in Generation IV and previous, where it still held the title along with Happiny, Chansey and Arceus).
Origin
Blissey appears to be based on a nurse. Design-wise, it appears to have some physical similarities to Nurse Joy from the anime in both color and hair.
Name origin
Blissey derives from bliss (happiness), combined with the suffix sey from Chansey, her pre-evolution.
Happinas may be a corruption of happiness, or it may be a combination of happiness and nurse. It may also involve 茄子 nasu (eggplant), referring to the egg theme of this evolutionary line.