Peropero is a Remless sent by ParaPara to fight the Sailor Scouts. She initially has the appearance of a balloon, but gains a humanoid form. She is a shapeshifter, and can multiply into smaller ball forms. She appeared in Sailor Moon Super S Episode 31, Pegasus Revealed.
When ParaPara was in the process of extracting several dream mirrors at once, the Sailor Scouts came to stop her, so she sent Peropero after them. Peropero multiplied into smaller ball forms whenever attacked, but was eventually frozen by Sailor Mercury. She broke free in her original form and turned into a humanoid form. After Peropero was attacked by Tuxedo Mask, Sailor Mini Moon summoned Pegasus with Crystal Twinkle Bell, and Sailor Moon destroyed Peropero with Moon Gorgeous Meditation.
her big sister is Puko