The Capybara Kids behind the idol group Yama Arashi.
The Capybara Kids (カピバラキッズ Kapibara Kizzu?) is an idol group made up of five capybaras. They are shown briefly in episode 31 as background dancers for the popular idol group Yama Arashi dancing to the song Yama Arashi☆Tonight.
Panda-Mama was unsure of how talented they'd be based off their looks, but after seeing them in concert she could see their charm. It is unknown if they became popular in the future.