|Name: Mimi (ミミ Mimi)|
|Race/Species: Water Demon|
|Hair Color: Light Blue|
|Eye Color: Red|
|Favourite Color: Light Blue|
|Image Song: Kuro no Kyōsōkyoku, Yami no Baroque|
|Family: Sheshe (sister)|
|Friends: Sheshe, Lucia, Hanon Rina.|
|Enemies: Gaito, Mikeru|
|Voice Actress: Noriko Shitaya|
|Position in the Series: Villain|
Mimi (シスターミミ Shisutā Mimi) is an antagonist in the Mermaid Melody series.
Mimi and Sheshe are thought to be lovers and in some cases this is true, in the manga, they are. Mimi is the younger sister of Sheshe. Mimi is a mercenary of Gaito, and not in love with Gaito like the Dark Lovers. Mimi is more of a follower of Sheshe, and in their song, she sings the chorus. Their song causes pain to mermaids. Like her sister, Mimi is also transformed by Gaito's spell, and her true form is a blue demon anglerfish. In the anime she becomes friends with the Mermaid Princesses, and cries when she finds out her friends are the Mermaid Princesses.
Mimi wears black spiked dog collar blue corset black short-shorts and a microphone for a tail.