Dolly was the main villain of the 1991 horror movie Dolly Dearest, technically she was one of many possessed dolls in the movie - however there was a singular "Dolly" that seemed to have more hold over her human victims than the others and thus could arguably be the prime villain of the mob of demons.
History[]
Dolly and her many minions were the creations of Elliot Wade, an American who had gained possession of the Dolly Dearest doll company in Mexico and moved his family out in order to oversee the project - however he was unaware that evil spirits had been disturbed from the archaeological site of a nearby tomb belonged to an ancient and tribal Mayan cult known only as Sanzia ("Satan on Earth" in Spanish) who once worshipped and feed the warm blood of slaughtered children to the mythological Devil Child that is so evil it nearly caused their extinction before they put the creature to its howling death and sealed it away. These roaming spirits that are actually split from the soul of the Devil Child itself, broke out of the tomb, quickly found a vessel to enter the mortal world in the form of the many dolls Elliot had made: much like in Child's Play, Elliot gave one of the dolls to his daughter Jessica to keep - this doll is known as "Dolly" and acts as the main villain since she tries to possess Elliot's daughter and corrupt her innocence.
After a few grisly murders however, Elliot and his family along with become aware of Dolly and her plans, they fight back - climaxing in them blowing up the Dolly Dearest factory with dynamite: as Dolly and the other dolls explode the evil spirits are dispersed and peace seemingly restored to the area.