Mermaid Sisters

Mermaid Sisters are a buff, skinny quadruplet acapella group with black dreadlocks and blue wigs. They have mustaches and wear pink dresses with one sibling performing shirtless. They lack real personalities but get angry when insulted. They competed in Mars' Brightest, performing "The Mermaids of the Galaxy" with uncensored lyrics. They were stopped by Catherine for their lyrics, leading to their defeat against GGK.