|First appearance||Episode 13|
|Species / Type||Alien|
According to the Narrator, Muku is an alien to invade Pekopon, despite this, he is harmless, he is just to let his hosts feel his presence.
He was first seen trying to distract (at least scare) Melody Honey while she was taking a shower. Despite she feels a strange presence, Melody doesn't seem to mind. Later, he was hanged by a string from the ceiling hole (by Dororo\Koyuki).
He is a humanoid alien resembling an old man, he has round eyes and fair brown skin.