Dolly is a female Dalmatian and is the female protagonist of 101 Dalmatian Street. She is one of the eldest siblings among Delilah and Doug's puppies. Both she and Dylan look after their younger siblings while their parents are busy at work.
Dolly is a rebellious tomboy who comes up with a lot of insane ideas that end up causing trouble. She is more adventurous and outgoing than her brother, Dylan.
Dolly has white fur with black spots, and wears three rings on her neck; one dark blue, one light blue, and one orange. She also has black arms and legs.
In one of the images presented at the Annecy film festival panel, Dolly appears to have a yellow collar and looks slightly older than she does in the series.