The first trailer for the movie seems to position her as the villain (she does have an army of ventriloquist dummies after all), but she’s got a backstory that will bring you to tears.
One of the new characters is Gabby Gabby, who looks like she’s based on one of those older “talking” dolls.
In addition to old favorites like Woody, Buzz Lightyear, and Jessie, Toy Story 4 will feature a bunch of new toys who will either help or hinder the heroes.