Musharna is rounded, bipedal Pokémon that has a tapir-like trunk. Its body is light purple, while its head is a pale pink. It has oval, red eyes with three eyelashes and dark pink ovals on its forehead and cheeks. The tips of its four stubby limbs are dark pink. Dream Mist seeps out of the mark on its forehead. This mist has various colors depending on what kind of dreams Musharna has eaten; it is most often a dark pink. Shapes and forms of the dreams Musharna has eaten can appear in the mist as well.
Musharna debuted in Dreams by the Yard Full!, under the ownership of Fennel. Musharna was the subject of research in the Dreamyard, due to the possibility of using its Dream Mist as a cleaner energy source. However, due to the evil thoughts and desires of people on the project, Musharna's Dream Mist was corrupted, which caused an energy overload and destroyed the whole facility in a powerful explosion. It later reappeared in Archeops In The Modern World!, where its Dream Mist was used to revive a fossilized Archen.
Musharna shares its category with Komala. They are both known as the Drowsing Pokémon.
Musharna 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. Musharna, like Drowzee, also seems to share some inspiration from the myth of the baku, tapir-like creatures that eat dreams. Its curled up appearance is similar to that of a fetus.
Musharna may be a combination of ムシャムシャ mushamusha (onomatopoeia for eating, as it eats dreams), 夢 mu [on'yomi] (dream), and luna (Latin for moon).