Is jessie a central character in toy story 4?

Quick Answer
Yes, Jessie is one of the central characters in Toy Story 4, returning as a key member of the toy gang alongside Woody, Buzz, and the others.
Full Explanation
According to the verified Wikipedia entry, Jessie is described as a cowgirl rag doll and one of the central characters in the Disney–Pixar Toy Story franchise. The entry explicitly states that she first appeared in Toy Story 2 and returned in the sequels, including Toy Story 3, Toy Story 4, and Toy Story 5. This confirms her status as a central character in Toy Story 4.
In Toy Story 4, Jessie continues to be part of the core group of toys that drives the story forward. Her personality traits—being brave and excitable—are highlighted in the franchise description, and she participates in the main events of the film alongside Woody, Buzz Lightyear, Bo Peep, and Forky. Her presence is integral to the ensemble dynamic that the movie relies on.
Jessie is voiced by Joan Cusack in the Toy Story filmography, a detail provided in the source cites as part of her continued involvement in the series. While the Wikipedia snippet also notes her singing voice in Toy Story 2 and her voice in video games, the primary film role remains credited to Cusack, reinforcing her ongoing centrality.
The evidence shows that Jessie’s role is not limited to a cameo; she is listed among the characters who returned for Toy Story 4 as part of the ongoing narrative. Her continued presence across multiple sequels underscores her importance to the Toy Story universe as a whole.
Based solely on the verified facts, Jessie’s inclusion as a central character in Toy Story 4 is directly supported by the source material, leaving no uncertainty about her significance in the film.