Munna is a pink, nearly spherical, quadrupedal Pokémon of indefinable basis. It has four tiny tapered limbs and a tapered snout that largely obscures its sizable mouth. Munna has shiny, oval, red eyes with two discernible upper eyelashes. Between its eyes is an oval spot in a darker shade of pink, from which Munna can expel Dream Mist. Purple, five-petal flower markings with dark pink centers ornament much of its body, which glow faintly when it feeds on dreams. It is able to constantly float in the air.
Munna is able to eat the dreams of people and Pokémon, as well as project these dreams by expelling Dream Mist. A person whose dream was eaten by a Munna will forget the dream's contents. The Dream Mist will be pink if the dream was pleasant. Munna can also seek out and cure people and Pokémon who are having nightmares by eating their dreams; the Dream Mist extracted from a nightmare will be black in color. Munna and its evolution are thought to share common ancestry with Drowzee.
A Munna nicknamed Musha was the second Pokémon Black obtained. Musha was able to eat Black's dreams, clearing his mind of distractions, allowing him to perceive things a normal human can't. He first appeared in Choices.
In Generations I and III (and eventually VII) set in Kanto, long before Munna debuted in Generation V, a Picnicker on Route 10 mentions that she wishes that there were pink Pokémon with floral patterns, a description of which Munna fits.
An employee of the Devon Corporation says that he wants to create a machine that can visually reproduce the dreams of Pokémon. Dream Mist, which Munna produces, can achieve this.
Munna is featured in the first promotional C-Gear skin. It is available by default in Japan but requires a password internationally.
Munna and Musharna were designed by Atsuko Nishida. Munna was designed after Musharna, which itself was designed before the concept of the Dream World was created.
Munna appears to be based on traditional Japanese incense burners called koro. These are used in traditional tea ceremonies, but many styles of koro have been developed to be used with insect repellent incense. These insect repellent koro are popularly shaped like a pig and can have patterns painted on them, such as floral patterns. Munna, like Drowzee, also seems to share some inspiration from the myth of the baku, tapir-like creatures that eat dreams.
Munna may be a combination of 夢 mu (dream) and luna (Latin for moon). It may also involve mana, 花 hana (flower), muna (Finnish for egg), or むにゃむにゃ munya munya (Japanese onomatopoeia for indistinct mumbling, as if talking in one’s sleep).
In other languages
From 夢 mu, luna, and possibly mana, 花 hana, and muna