Which toy stows away with Jessie in Bonnie's suitcase?

Bullseye stows away with Jessie in Bonnie’s suitcase.

When Bonnie prepares to attend a sleepover, Jessie and Bullseye secretly climb into her luggage so they can accompany her. Bullseye is Jessie’s loyal toy horse and one of the surviving members of the Woody’s Roundup group. Their journey becomes another attempt by the toys to stay close to Bonnie while her attention is increasingly captured by Lily, the talking tablet.

Bullseye’s presence is especially fitting because Jessie and Bullseye have been closely associated since Toy Story 2. In that film, both belonged to the collection assembled by Al McWhiggin, and Woody learned that Jessie had once been abandoned by her owner, Emily. Bullseye is sometimes confused with Woody’s other companions, such as Slinky Dog, but he is specifically Jessie’s horse. Hamm, Forky, and Rex are all Bonnie’s toys, yet none is the suitcase stowaway in this scene.