Miuccia Miuller
- Primary work
- Stone Ocean
- Stand
- Jail House Lock↗
- Age
- 25↗
- Occupation
- Lead guard of G.D. St. Prison | Supervisor of the front gate and the visiting rooms↗
Miuccia Miuller (ミュッチャー・ミューラー, Myutchā Myūrā), commonly known as Miu Miu (ミューミュー, Myū Myū), is a secondary antagonist featured in the sixth part of the JoJo's Bizarre Adventure series, Stone Ocean, specifically the " Jail House Lock! " story arc.
Miu Miu is the lead guard of Green Dolphin Street Prison. She clashes with Jolyne Cujoh and Emporio Alnino as she tries to prevent them from breaking out of prison. She is a Stand user and uses Jail House Lock to manipulate the memories of her enemies.

Image attribution details
Miuccia Miuller. Source illustration via JoJoWiki; copyright remains with the original rights holders.
Image via JoJoWiki. Original franchise/production rights holders retain copyright; the wiki text CC BY-SA license does not license this image.
Original image ↗ · Archived image ↗01Basic information
- Japanese Name
- ミュッチャー・ミューラー | ミューミュー↗
- Romanized Name
- Myutchā Myūrā | Myū Myū↗
- Aliases
- Miu Miu (Nickname)↗
- Stand
- Jail House Lock↗
- Age
- 25↗
- Birthday
- ~1986-1987↗
- Gender
- Female↗
- Height
- ~175 cm (5 ft 9 in)↗
- Nationality
- American↗
- Occupation
- Lead guard of G.D. St. Prison | Supervisor of the front gate and the visiting rooms↗
- Affiliation
- Green Dolphin Street Prison | Agents of Pucci↗
- Manga Debut
- SO Chapter 96↗
- Anime Debut
- SO Episode 23↗
- Game Debut
- Eyes of Heaven (NPC)↗
02Appearance
Miu Miu has long, ratty blonde hair that's styled in several long tendrils with her eyebrows styled into circles. She wears heavy amounts of makeup and as a prisoner, she is dressed in a large sweater with pom-poms that resemble eyeballs. Miu Miu also wears stockings that have holes in them and a skirt with various words written across it, such as "Delicious" on the rear. She also wears boots with oversized leg warmers and a parting between the big toe and the other digits, likely a reference to the Maison Margiela Tabi boots.↗
Only the top half of her security uniform is shown. It is a long-sleeved collared shirt with two breast pockets and rectangular badges above them, as well as on the collars. Her left shoulder has a shield badge with text written above an emblem. Alongside it, she wears a belt with satchels and pockets attached to it.↗
03Personality
Miu Miu is the ruthless lead guard of the visiting rooms at Green Dolphin Street Prison.↗
Miu Miu seems to take her job as a guard rather seriously. Contrary to other guards, Miu Miu doesn't automatically use excessive force when dealing with the prisoners as she opted to openly confront Jolyne and show her Stand Jail House Lock as a warning first. This implies Miu Miu was willing to let Jolyne be if the latter didn't try to escape. Even after affecting Jolyne with the memory loss, Miu Miu keeps an eye on her. By looking at Jolyne's writings, she then discovered Emporio Alnino 's existence and enacted a plan that would make Jolyne lead Miu Miu to Emporio so that she could ensure Jolyne couldn't receive help.↗↗↗↗↗
While Miu Miu is generally less violent than the average guard, she remains a truly ruthless warden. As soon as she deems someone a prison breaker she doesn't hesitate to use lethal force. She was even willing to shoot Emporio, a small boy, to stop Jolyne. After Jolyne causes her more trouble than she expected, Miu Miu does confess that she's pleased at the prospect of Jolyne being shot down by the guards.↗↗↗
04Abilities
Stand
Jail House Lock is a humanoid Stand capable of making one or several people able to only memorize three new pieces of information at once, the oldest memory being replaced by the newest memory.↗
05Story
SPOILERS
Background
Miu Miu is the lead guard in charge of the visiting room and front gate areas of the Green Dolphin Street Prison. Working alongside Whitesnake, Miu Miu has been preventing Stand users from escaping the prison thanks to her power. After Enrico Pucci fuses with The Green Baby, she is sent out to make sure Jolyne Cujoh does not meddle with Pucci's affairs anymore.↗
Jail House Lock!
Miuccia Miuller appears to Jolyne in her temporary confinement cell and relays a message from Whitesnake about how she shouldn't escape and should comply; if she does, he will make sure that Jotaro 's DISC will get out of the prison. Showing off her Jail House Lock as a warning, Miuccia explains that her orders are to kill Jolyne if she escapes and adds on that her other targets are Weather and Anasui. Jolyne declares that she is escaping and summons Stone Free to attack Miuccia.↗
Disguising herself as an inmate in the women's ward, Miuccia keeps an eye on Jolyne. She sits with Jolyne, interrupting her lunch and messing with her. Expressing her disgust when she steps on a cockroach, Miuccia proceeds to take her shoe off and put the cockroach in Jolyne's food then pours three sauces on Jolyne's plate to escape retribution.↗
Still following Jolyne, Miuccia eventually attracts her attacks but runs away, luring her in a forbidden corridor when guards threaten to shoot her. Jolyne escapes the guards and arrives in Emporio's ghost room, just as she planned. Entering the room, Miuccia takes a look at Emporio's Computer and realizes that she's identified her true identity. She declares Emporio a criminal and shoots several bullets at Jolyne and Emporio, hitting him and his computer screen.↗
Miuccia is then taken hostage by Jolyne and forced to instead use her ability on the guards, allowing Jolyne, Emporio and Ermes to easily escape Green Dolphin Street Prison.↗
06Plot details
SPOILERS
Profile details
Status Status based on their final appearance in the part(s) they are featured in: Retired (Part 6)↗
07Appearances
08Sources & attribution
- Miuccia Miuller
Source bibliography (8)
- JOJO magazine 2023 WINTER: JoJo by Generations lists "~1985-1986?". However, 1985 doesn't fit with Miu Miu's age being 25 in 2012. Open ↗
- Lead Guard (主任看守, Shunin Kanshu) Open ↗
- Stone Ocean Chapter 98: Jail House Lock!, Part 3 Open ↗
- Stone Ocean Chapter 97: Jail House Lock!, Part 2 Open ↗
- Stone Ocean Chapter 99: Jail House Lock!, Part 4 Open ↗
- Stone Ocean Chapter 102: Jailbreak..., p.13 Open ↗
- Stone Ocean Chapter 100: Jail House Lock!, Part 5 Open ↗
- Stone Ocean Chapter 101: Jail House Lock!, Part 6 Open ↗
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