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The character featured in this article is commonly referred to as "Guess."
I know I told you not to talk, but I'll still let you use cute mouse-speak. Stuff like, "Hewe I go!" or "I'm hungwy!" or "Nighty night, I'm sweepy!" This is a rule, okay?
—Gwess after shrinking Jolyne, SO Chapter 7: Goo Goo Dolls

Gwess (グェス Gwesu) is a side character featured in the sixth part of JoJo's Bizarre Adventure, Stone Ocean. She is introduced in the "Prisoner FE40536: Jolyne Cujoh" story arc as an antagonist before she turns into a neutral character.

Gwess is introduced as Jolyne Cujoh's cellmate. She soons decides to shrink the newcomer with her Stand Goo Goo Dolls, but is defeated and becomes Jolyne's flunky.


Gwess is a young woman of average build and height, with long dark hair. She dons three dots under her left eye. Gwess wears a horizontally stripped body suit, supported by another layer of clothing over her breasts, over which she wears a typical Green Dolphin Street inmate jacket. Her pants are covered with stripes over her thighs with different colored normal pant legs behind and down to her feet. She also sports a pair of boots, decorated outside the pants by long accessories that are incrementally indented. She wears a voided hat furnished with a bird feet motif, out from which her hair sticks out, as well as a thick collar around her neck.

Color Schemes

The series is known for alternating colors between media, the information presented below may or may not be canon.

Skin (Fair, blue makeup.)
Hair (Black)
Eyes (Gray)
(Yellow, black, and cyan body suit, cyan and black hat, olive inmate jacket, silver accessories.)

Skin (Tan, blue makeup.)
Hair (Black)
Eyes (Gray)
(Mustard yellow, black, and cyan body suit, cyan and black hat, olive inmate jacket, dark gray accessories.)


Gwess first gives the impression of someone sweet and kind. Originally, she was seen with a 'pet' she made talk and gave treats to. If it refused, her personality quickly changed into a mad-driven woman capable of killing for fun. She has no problem with tricking others, but is nevertheless a coward. Unaware of the nature of Stands, she didn't participate in any battles following her conflict with Jolyne, and resigned herself to read magazines and otherwise act subservient toward her cellmate. When Jolyne was under the effect of Miu Miu's Jail House Lock, Gwess hardly talked and was very timid.



Main article: Goo Goo Dolls

Gwess's Stand, Goo Goo Dolls, grants her the ability to shrink the size of selected targets within her range to the size of a mouse.

Goo Goo Dolls (グーグー・ドールズ)Link to this section



According to her privilege card, Gwess was sentenced to 12 years in prison after being charged with arson, attempted murder, and parole violation.[2]

Prior to meeting Jolyne, Gwess bought a pendant from Ermes Costello. She also acquired her Stand ability Goo Goo Dolls several days before meeting Jolyne and it is unknown if the pendant had something to do with it, though Jolyne later speculates that she must have acquired it the same way she discovered her Stand.[5] Nonetheless, she kept the pendant. After one guard was fired for laziness on the job, Gwess shrunk said guard and hid him in a parrot's skin, making him her pet and training him.

Stone Ocean

Meeting Jolyne Cujoh

Gwess is introduced to Jolyne Cujoh in Green Dolphin Street Prison as her new cellmate. Initially acting nice, Gwess makes Jolyne trip and yells at her the moment Jolyne tries to put her items on the bottom bunk. However, the bottom bunk is Gwess', although she's used the top bunk as a storage area. Jolyne is then intrigued to see her father's pendant and tries to take it, but Gwess snaps again. Jolyne explains that it is a personal item of hers, but Gwess offers to sell it back to her for $200, despite buying it for only $2. The next day, Gwess wakes Jolyne and apologizes for her actions by returning her pendant to her. She proceeds to show that the pendant is empty, "proving" that it isn't Jolyne's. She also maliciously soaks Jolyne's only pants with water from the sink. While Jolyne is busy drying her clothes, Gwess has breakfast and even takes two portions and throws out the surplus food. She also throws away the picture of Jolyne's parents.

Jolyne is shrunk by Gwess' ability

Gwess then trains her pet parrot and orders him to jump from her pocket to her shoulder. Dangling a macaroni in front of her pet, Gwess is dissatisfied when he says "Good morning" instead of "I love you" and tells him to say it, handing him the macaroni when he obeys. Gwess then orders her pet to jump from her shoulder to her finger, getting angry when he hesitates. The pet manages to reach the finger but blurts out a "woah", making Gwess furious at her pet. Gwess decides to separate herself from him but senses something passing near her. Hiding her pet, Gwess then realizes that it has been replaced by a banana. However, she soon finds a shrunken Jolyne who has put her nose where it didn't belong.

Gwess takes Jolyne to their cell and decides to make Jolyne her new pet. Thus, she forces her to put on a mouse's skin and speak cutely. She also throws the body of the guard down the toilet. Wanting to escape prison, Gwess begins to train Jolyne, making her run in a wheel and putting books on her to "build up her strength." Gwess discovers that Jolyne is cheating and snaps, but then expresses her amusement at Jolyne's spirit.

Later, Gwess names her ability Goo Goo Dolls and sends Jolyne to scout the first control center of the women's ward. A guard passes and tells her to get away from the gates, which she does. Jolyne then begins to turn back to her normal size and becomes pursued by Goo Goo Dolls but awakens her Stand and beats it. Gwess reappears in front of the exit gate and apparently yields. On Jolyne's orders, Gwess shrinks and regrows Jolyne to free her. She also reveals that she bought her pendant from Ermes. Letting the pendant drop, Gwess makes Jolyne lean to take it and Gwess punches her through the bars of the gate by shrinking her a little and calls the guards.

With Stone Free, Jolyne defeats Gwess

A guard does spot Jolyne from behind and rings the alarm. Gwess gloats, expecting Jolyne to be shot down, but then Jolyne's Stone Free appears and pummels her through the fence. Gwess is tied up and Jolyne successfully threatens her into giving up. Gwess makes Jolyne shrink again to make her pass and from now on, Gwess becomes Jolyne's lackey.

While Jolyne accustoms herself to prison life, Gwess advises her to get her money back as quickly as possible after Jolyne lends $1 to a co-prisoner. Gwess explains that if Jolyne doesn't make herself respected, then she will be the victim of the prison's many bullies.

Jail House Lock

Gwess is seen again during the Jail House Lock story arc. She is disturbed by Jolyne's sudden forgetfulness after she returns from solitary confinement. Jolyne asks about "Miu Miu" and Gwess describes this new prisoner to the best of her ability, although it further confuses Jolyne. At lunch time, Jolyne unwittingly eats Gwess' lunch, especially her favorite cheese-flavored penne. Jolyne apologizes and wants to use her ticket to buy another lunch box but Gwess wisely decides to take the ticket and buy the lunch herself. Still, Jolyne eats Gwess' lunch again behind her back.


Book Icon.png Manga Appearances
Chapters in order of appearance


Quote.png Quotes
Good good good good good good good ! Very good, very good, very good, very good! Darling that was not bad! Not bad at all!
—Gwess to her pet, SO Chapter 5: Prisoner FE40536: Jolyne Cujoh, Part 2
Also, Even though I said you can't speak, you can still say cute things. Like "I wanna walk", "I'm hungry" and "Good night". Got it?
—Gwess to her new pet Jolyne, SO Chapter 6: Prisoner FE40536: Jolyne Cujoh, Part 3
"Goo Goo Dolls", this will be my ability's name.
—Gwess, SO Chapter 7: Goo Goo Dolls
Jolyne! Jolyne! Jolyyyyyne! Serves you right, you fucking bitch! This is what you get for trampling on myy heaaaart!
—Gwess, SO Chapter 9: Stone Free, Part 2
C'mon, I don't want you to hate me. I pledged that I'd be your servant, remember? I'll do everything you say, and even let you sleep on the bottom bed!
—Gwess sucking up to Jolyne, SO Chapter 10: Green Dolphin Street Prison




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