|Romaji||Niji no Konkisutadoru|
|Voiced by||Hiyori Kinoshita
Emiri Suyama Akari Nakamura Nanami Nishi
|Debut Episode||Phantasmagoric Arc, Episode 10|
Rainbow Conquistador is a pop idol group that consists of four people in the Wooser franchise. They appear throughout the episode, but are hidden characters until the scene of the convention where they help Mel Kishida sell doujinshi and where they saw Rin, Len and Wooser.
The pop idol group actually contains 11 people total out of the four that voice acted for the episode that they appeared. They perform under a label backed by a site called Pixiv, where doujinshi and fan art is spotlighted.