Jackie Tristan

is a member of the mysterious organization, Xcution.

Appearance
Jackie is a tall woman with short dark hair. She wears a dark long-sleeved shirt.

The Lost Substitute Shinigami arc
Jackie is present along with Yukio and Giriko Kutsuzawa in the Xcution's main headquarters when Kūgo Ginjō brings Ichigo Kurosaki into the building for him to join them. After Kūgo explains to Ichigo who they are, and after Riruka Dokugamine brings in Yasutora Sado, Ichigo agrees to help the Xcution with their goals, which relieves Jackie, Giriko, and Yukio.

Ichigo later returns to the Xcution for training. When Riruka enters with a doll house, she immediately starts fighting with Yukio. Jackie breaks up their fight and asks Riruka to explain the Doll House to Ichigo. Riruka complies, arguing that she didn't need her to remind her. As Ichigo trains inside the Doll House, she asks Kūgo if he will be alright. Kūgo replies that he does not know. Later, while Riruka is eating, Jackie notices that Riruka is worried and asks why she does not help him. Riruka denies being worried and tells her that if he dies from the training, then it will just show how limited his potential was. Jackie asks if she is certain, inquiring if she has a timer on the doll and pointing out that fifteen minutes is almost up. Yasutora Sado returns to Xcution's hideout and asks what the Doll House is. Jackie tells him that Ichigo is doing his Fullbring training in it, surprising him. Later, Jackie asks Kūgo if he's drinking because he's happy that Ichgio's training is going well, which he denies. She also appears shocked that Ichigo knows of the existence of another Fullbringer.