Happiny is a small Pokémon that is shaped like an egg. It has a soft, smooth, light pink body. On top of its head is a curly outgrowth that resembles a ponytail, with a dark pink band around the base. The appearance of this curly growth of hair often annoys Happiny. It has three round bumps on its forehead. There is a pouch around lower half of its body, which resembles a diaper. The pouch is red with a white stripe around the top.
Happiny's pouch is rubbery and flexible, enabling the Happiny to put things into it with ease. As it cannot produce Eggs yet, it makes up for it by carrying a white, Egg-shaped stone in its pouch to imitate Chansey and Blissey. It may give this stone to people whom it likes, and it has a habit of wandering about people feet and causing them to stumble. Happiny is shown to be extremely strong in the anime, as one has been seen lifting heavy things above its head. Happiny is a female-only species with no male counterpart.
Brock's Egg hatched into a Happiny in One Big Happiny Family!. Unusually, in contrast to Happiny's extremely low Attack stat in the games, she has amazing strength and can run with, pummel, and carry many heavy items and Pokémon for its size, such as having the ability to fling her Trainer into the air with ease and carrying Ash's Grotle around in Jumping Rocket Ship!. She evolved into a Chansey in The Brockster Is In!.
Happiny, the Playhouse Pokémon. It loves round white things. It carries a round stone in its pouch that looks like an Egg, and gives it to people that it likes.
If the Oval Stone is counted as an evolutionary stone, then Happiny is the only Pokémon that evolves with a stone that can evolve further.
It is also the only Pokémon that evolves twice by leveling up under certain conditions, once by holding an item, and another time by leveling up while having high friendship.
Happiny, along with Chansey, has the lowest base stat for both Attack and Defense in the games.
Happiny, and her evolution family, Chansey and Blissey, have the most in-game items associated with them (with the exception of Arceus). These include: Lucky Punch, Lucky Egg, Luck Incense, and the Oval Stone.
Happiny bears a resemblance to a hoax Pokémon that was created on April Fool's Day 2005.
Origin
Happiny shares a few characteristics with infants, such as its soft skin and diaper-like pouch.
Name origin
Happiny is a combination of happiness and tiny or teeny. It may also derive from happenstance, referring to chance.
Pinpuku may be a combination of ピンク pinku (pink) and 福 fuku (good fortune).