The Pokemon Company has a habit of creating songs and music videos for specific characters that can be quite cute and silly. Slowpoke, Magikarp, Mimikyu and Tentacool all have their own tracks. Now, Pyukumuku joins them with its own song.
The Pyukumuku song is in Japanese, though clicking the closed captioning button translates it for you. Basically, it talks about the Pokemon’s unique nature. It also discusses all the different Pokemon it can make by having its gut hand pop out to make puppets. (For example, it says you can make Cloyster or Pinsir if you have two Pyukumukus and they put their hands together.)
Should people be interested in seeing or catching a Pyukumuku, Pokemon Sun, Moon, Ultra Sun and Ultra Moon are available for the Nintendo 3DS.