Wigglytuff is a balloon-like Pokémon with leporine features, a bean-shaped body and stubby arms and legs. There is a fluffy, curled tuft of fur on its head, which is described as perfectly heavenly. It has long, rabbit-like ears with black insides and slightly lighter color at the tips. Its large, blue eyes are covered in a layer of tears that quickly washes away any debris. It is covered in pink fur with a white belly. This fine layer of fur is so soft that those who touch it, including other Wigglytuff, will not want to stop. As a result, Wigglytuff is a highly sought after Pokémon because of its bouncy body and fur. It sheds seasonally, and people gather the fur to spin into yarn. It is proud of its fine and delicate fur.
Its body is soft and rubbery, allowing it to inflate by inhaling. Wigglytuff can inflate itself up to 20 times larger. It has no limits to how far it can inflate. While it is inflated, it is able to move by bouncing or floating. It competes with other Wigglytuff to see which one can inflate itself the most. Should it be caught in a bad mood, Wigglytuff will inflate itself to an enormous size in order to scare away its opponent. Being the result of an evolution via Evolution stone, Wigglytuff is rarely found in the wild, though they can be found in vivid green plains and grassy fields.
Pokémon Mystery Dungeon: Explorers of Time and Explorers of Darkness and Explorers of Sky: Wigglytuff is the head of the main guild in Treasure Town. His personality tends to be erratic, but he cares about all his friends in the guild, especially his close partner Chatot. He also has a love (some would say obsession) of Perfect Apples, and is basically all he eats. He can often be seen bouncing one off his head during dinner. He is described as peculiar and weird in the game, although he is exceptionally strong, defeating the whole of Team Skull and Kabutops and the Omastar Brothers, as well as numerous others, with ease. Chatot warns not to annoy or disrespect Wigglytuff, as he is liable to explode with anger.
Wigglytuff and its pre-evolved forms share their category name with Qwilfish and Drifloon. They are all known as the Balloon Pokémon.
Wigglytuff has the highest base HP of all Fairy-type Pokémon.
In its earlier appearances, Wigglytuff's white stomach did not always extend above its mouth; however, it always does this in modern appearances.
Wigglytuff appears to be based on a balloon due to its inflatable body. Its soft fur and singing ability may be based on plush toys that play music to help children fall asleep. Its round shape resembles a powder puff or a cream puff, and its pink color, rubbery skin, and ability to learn Bounce are similar to a rubber ball. It may also be inspired by the mythical moon rabbit due to its rabbit-like ears, Fairy typing (which tends to be associated with the Moon), and the fact that it evolves from Jigglypuff using a Moon Stone.
Wigglytuff may be a combination of wiggly and tuft (a bunch of hair) or tough.
Pukurin may be a combination of ぷくぷく pukupuku (cute and chubby), ぷりぷり puripuri (angrily or in a huff; referring to its personality), くりくり kurikuri (big and round), and プリン purin (pudding; referring to its soft body). It may also involve 風船 fūsen (balloon) and 膨れる fukureru (to become inflated).
In other languages
From ぷくぷく pukupuku, ぷりぷり puripuri, くりくり kurikuri, プリン purin, and possibly 風船 fūsen and 膨れる fukureru