Name: Mimi (ミミ Mimi)
Age: 15
Race/Species: Water Demon

Physical Appearance

Gender: Female
Hair Color: Light Blue(Normal form)/Grayish Blue(Human form 2)
Eye Color: Red(Normal form)/Brown(Human form 2)

Personal Information

Favourite Color: Light Blue
Image Song: Kuro no Kyōsōkyoku, Yami no Baroque
Hobbies:Singing with Sheshe
Favourite Flower:Marigold


Family: Sheshe (sister)
Friends: Sheshe, Lucia, Hanon Rina.(Only becomes friends with the mermaids in anime)
Enemies: Gaito, Mikeru

Production Information

Voice Actress: Noriko Shitaya
Position in the Series: Villain

"So true!/Hontoda yo ne!"- Mimi's signature catchphrase in Episode 27(Pitchi Pitchi Pitch)

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 is the youngest sister from the Black Beauty Sisters.She and her sister first appeared in Episode 27,almost succeeding in capturing the mermaid princesses,as they were immune to their songs before.The first and only mermaid that they had "captured' was Karen ,until Lucia,Hanon and Rina rescued her by singing their newest song Kizuna.

After Episode 28,Mimi and her sister continuted to work for Gaito,they were not worried about getting replaced or punished as Gaito always trusts them.Until episode 48,Mimi had insulted Gaito by saying something mean about Sara and he slapped her.Sheshe suggested that they steal Noel and Coco's pearls and act on their own.They also hypnotized the Dark Lovers to help them capture the mermaid princesses.They almost succeeded until Aqua Regina gave the four of the new song Kodou .They asked Gaito for help but he was very angry at them so he turned them back into anglerfish


Fortunately,they were revived/turned back into water demons in Season 2 Episode 2/Pure Episode 2 by their new boss,Mikeru.Mikeru also gave them a new song Yami No Baroque ,even more powerful than their former song.In this season,Mimi and her sister are not as carefree and arrogant as before.They are scared of getting turned back into anglerfish/returning to the dark sea(Too bad their ultimate fate is even worse than that)Mimi tries to relieve stress by popping bubble wrap.

In Pure Episode 27/Episode 79 ,after messing up their latest plan to capture the mermaids.Sheshe scolds Mimi for their failure and her clumsiness.They got into a fight and Mimi ran away after Sheshe said she wish she never had a sister like Mimi.She goes on land to try and find the mermaid princesses on her own.Mimi then ran into Lucia(Without knowing she is the Pink Pearl Mermaid Princess)and she spend the night in Pearl Piari .Mimi(She called herself Mari)told the mermaid princesses about her "rivals"(Ironically the mermaid princesses)Lucia,Hanon and Rina encouraged her to fight her"rivals" and don't give up no matter what.

After accepting the advice from her new "friends",she decides to fight the mermaid princesses on her own.She got to sing her own solo version of Yami No Baroque ,but since their songs don't harm mermaids if they don't sing them together,it had no effect on Lucia,Hanon and Rina.She tries to fight back even after the mermaid songs were making her lose strength.Eventually,she couldn't stand the songs anymore and floated away after getting attacked with the mermaid's Love Shower Pitch,almost dying.Luckily,Sheshe who was watching the scence happen from far away,came to her rescue.Sheshe was very angry at the mermaid princesses for hurting Mimi and used the ball of light/Seira's heart fragments to create water tornados to attack them.But Mimi soon fainted(Most likely from being hurt so badly and losing energy),Sheshe was very worried and left to heal her.Sheshe took Mimi to the bottom of the ocean and used the ball of light/Seira's heart fragments to heal Mimi.Knowing this would get Sheshe punished by Mikeru,Mimi told Sheshe to not heal her.But Sheshe did not care whether they get punished or not,as long as they are with each other.The episode ends with Mimi crying and hugging Sheshe tightly

Episode 79^ ^

(A very sweet and emtional scence,꒰๑•̥﹏•̥๑꒱)

In Pure Episode 33/Episode 85 Mimi started to realise that her friends were the mermaid princesses.When she saw the mermaid princesses turn back into their human forms,she burst into tears at the fact that the first friends she had ever made,were the mermaid princesses,her sworn enemies.She quickly left out of guilt and sadness,leaving Sheshe confused and startled.

Sheshe later found Mimi sitting by herself,asking her what happened.Mimi just told her"Sorry,Sheshe.I...I can't fight them anymore!"Unfortunately,Fuku interrupted them before Mimi could explain to her sister what happened.Fuku taunted and explained to them that he had never trusted them from the start,and they were only intended as sacrifices all along.

Mimi and Sheshe were very shocked(As they had made plan after plan,putting their lives at risk,only to be told that they had no use from the start,very infuriating)When Mikeru confronted them about it,Mimi pleaded Mikeru to only "punish" her and spare Sheshe.Sheshe comforted Mimi,and told her that even though they aren't going to win,they will show him the power of the Black Beauty Sisters.Mimi agreed,and they sing their first song Kuro No Kyousoukyou to Mikeru(Most likely because Yami No Baroque is the song given by Mikeru,which will not harm him)Mikeru began panting and screaming in pain(He was already begining to lose energy...And sanity)He couldn't handle their song anymore,he opened up his wings and absorbed the Black Beauty Sisters. Sheshe and Mimi screamed in pain as they were being absorbed.But Mimi managed to confessed about how she feels the happiest when she is singing with Sheshe.Sheshe had felt the same way also.They shared one last hug as their life energy was getting absorbed into Mikeru.Mimi told Sheshe that if they are ever reborn,she wants to introduce some friends(Mermaid Princesses)to her.Sheshe simply replied that she would want to meet them too.Those were their last words after Mikeru absorbed/killed them.

Episode 33,so sad😢

Sheshe and Mimi made one last appearence in Pure Episode 39(The Last Episode)singing Legend Of Merrmaid with the rest of the entire cast.But it is still unknown whether they were revived after Mikeru returned to The Ancients,or still dead.(Hope they are alive though)


Mimi has a rather childish and cute personality compared to her older sister.Often shown blusing and gasping whenever Sheshe touches her(Especially when Sheshe touches her chin^_^)and plays with bubble wrap to relieve stress(Pure episode 17)She can become very excited when she and her sister are about to cause a tsunami(Pitchi Pitchi Pitch,Episode 35),destroy buildings(Pitchi Pitchi Pitch,Episode 33)etc.

She can be very arrogant and just as mean as her sister when necessary.But deep down,she loves her sister very much and will do anything for her,even if it will cost her own life(Pure episode 33)


Mimi has light blue hair with red eyes.She also has dark blue horns that stick out of her hair.She has ears that look like fish fins.Like her sister,she also has a yellow lure(Similar to a bindis)on her forehead.But her hair covers it most of the time,sometimes shown when she is singing.

Mimi wears a black spiked collar on her arms and on her neck.She wears a blue corset with black short-shorts and has a microphone for a tail.
Mimi's regular form

Mimi's regular water demon form

She has two human forms.

  • Human form 1(Shown in Pure Episode 16)She has human ears,red eyes.She wears a blue top with gray shorts.She still wears her spiked accessories in this form.

    Mimi's human form 1

  • Human form 2(Shown in Pure Episode 27)Her hair becomes a more grayish blue.She has human ears and her eyes are brown instead of red.She wears a black beanie and a black dress with white stripes.She also wears glasses even though she doesn't need them.
Human form 2

Human form 2

Voice Actress

Mimi's voice actor is Noriko Shitaya(下屋則子)

Noriko Shitaya (下屋 則子, Shitaya Noriko, born April 22, 1982 in Chiba) is a voice actress who works for 81 Produce.She is most well known for voicing Sakura Matou in the Fate/Stay Night Franchise.(Coincidentally,the character Sakura also has an older sister called Rin Tohsaka who is voiced by Kana Ueda,a.k.a. Sara's voice actor)

In 2007,11 of February.Noriko Shitaya along with some other voice actors from Mermaid Melody(Miki Tsuchiya/土屋実紀,Sheshe's voice actor,yay.Megumi Kojima/ 小島めぐみ,Lanhua's voice actor.Sayori Ishizuka/石塚さより,Izuru's voice actor.)formed a band called "Cri☆siS"


  • Although Mimi often sings with Sheshe,she sang her own solo for about 15 seconds in Episode 79/Pure Episode 27
  • She hates the colour pink
  • She hates human food(Anglerfish that Karen cooked in Pure Episode 16)
  • Mimi's signature catchphrase "Hontoda yo ne/ホントだよね/So True" has appeared 81 times in total ! 71 times in both season 1 and 2,4 times in the previews.Really impressive.
  • In Episode 49 during the almost kiss scene(When Sheshe and Mimi are singing Kuro No Kyousoukyou),Mimi's face had no blush marks,mostly likely a mistake made by the animators.