Slurpuff is a white, bipedal Pokémon. It has reddish-pink eyes with white pupils and is usually seen with its tongue poking out of the corner of its mouth. When its mouth is open, two upper fangs can be seen. On top of its head is a mass of fluffy pink fur with a red cherry-like sphere on top. The placement of the cherry-like structure may be inspired by the phrase "Cherry on top". On either side of its head, its pink fur forms a spherical shape similar to ears. Around its neck is a wavy, red collar and there is a red spot on the left side of its chest. It has small, pink feet with three toes and stubby arms.
Slurpuff has an exceptionally keen sense of smell that is 100 million times stronger than that of a human. This allows it to distinguish even the faintest of smells and assist pastry chefs in the cooking. Slurpuff can tell a person's mental and physical condition by taking in their scent. Its fur contains a lot of air, making it light and soft to the touch.
A Slurpuff appeared in Volcanion and the Mechanical Marvel, under the ownership of Raleigh. It was Raleigh's companion and eventually proceeded to become his partner when Raleigh decided to set off on a Pokémon journey by the end of the movie.
Slurpuff is based on meringue, a dessert made from whipped egg whites and sugar. It is often topped with whipped cream and fruits to create a meringue nest. The red sphere on its head resembles a fruit topping such as a strawberry or cherry, which may refer to the phrase "Cherry on top". Meringue is also used as a sweet base on other various desserts such as cakes, pies, and pastries. Slurpuff may also be based on cupcakes or Japanese-style mille-feuille. Cupcakes are sometimes referred to as fairy cakes, which may be an inspiration for its type. Considering its lolling tongue, nose, paws, and ear-like circular extensions on its head, it may also be based on a dog, possibly a Bichon Frise or poodle.
Slurpuff may be a combination of slurp and puff.
Peroream may be a combination of ペロペロ peropero (onomatopoeia for licking) and cream.