A playable character in the [i][[Guilty Gear]][/i] series.

h4. Appearance

* [[Ankh]] [[pendant]] attached to a [[black lanyard|black]] [[lanyard]]
* [[Ball and chain restraint]] [[ball and chain (weapon)|used]] as a [[weapon]] ([[Dorpos]])
* [[Bangs]] [[hair between eyes|between eyes]]
* [[Spiked halo|Compass rose]] [[halo]]
* [[Large breasts]] or [[medium breasts]] with no cleavage
* [[Mature female]]
* [[Pumpkin mask]] ([[grey mask|grey]] [[mask]]) with a [[forehead mark|forehead]] [[ankh]] and [[glowing eyes|glowing]] [[green eyes]]
** Frequently [[unworn mask|removed]] and [[holding_mask|held]] 
* [[Shiny clothes|Shiny]] [[white bodysuit|white cloth]] [[bodysuit]] with a [[skin tight]] torso, [[ankh]]s, and [[ankh print]]
** [[White pants|White]] [[front slit]] [[bell-bottoms]]
** [[Collared shirt|Collared]] [[white shirt]] with [[front slit]] [[long sleeves]]
*** Has a [[plunging neckline]] as if an unzipped bikesuit, but with no zipper
* [[Tareme]]
* [[Too many belts]] ([[too many|ten]]), each [[belt buckle|buckled]]
** Four [[open belt]]s on each sleeve
** Four belts on the mask
** Waist [[skull belt]], held up with a [[shoulder belt]]
* [[Two-tone gloves|Two-tone]] [[black gloves|black]] and [[red gloves|red]]  [[fingernails|fingernail]] [[gloves]] with [[ankh print]]
* [[Two-tone footwear|Two-tone]] [[black footwear|black]] and [[red footwear|red]] [[high heels|high heel]] [[shoes]]
* [[Very long hair|Very long]], [[messy hair|messy]], [[two-tone hair|two-tone]] [[red hair|red]] and [[white hair]] with [[blunt ends]] and [[colored inner hair]]

In [i][[Guilty Gear Xrd|Guilty Gear Xrd Revelator]][/i], Jack-O' has [[red eyes]] and predominantly white hair, with red on the underside.
In [i][[Guilty Gear Strive|]][/i], Jack-O' has a [[broken halo]], [[green eyes]], and predominantly red hair, with white on the underside. The red part of her ankh pendant became green following her release as a playable character.

h4. See also

* [[Jack-O' Challenge]]
ジャック・オー ジャック・オー=ヴァレンタイン