Barbie

Barbie (voiced by Jodi Benson) is a character from the Toy Story movies. She is a doll line made by the company Mattel

Toy Story 2
The first direct appearance of a Barbie, or any Barbie, was when the toys were searching Al's Toy Barn for Woody after being kidnapped by its owner, Al. They had gotten lost with Mr. Potato Head as the driver (some of the toys think Potato Head is going down the same aisle as before, which he denies, as he points out that the aisle was different due to it being Pink.). They then stumbled upon a Barbie pool party playset where several Barbies were apparently partying, causing the toys in the car to gape at them. Hamm then asked the Barbies in regards to whether any of them knew where Al's office was. Then a Tour Guide Barbie model accepts their help, claiming to know where to find it. She then takes over as driver and gives them a literal tour of the shop, acting exactly like what her model description implied. Mr. Potato Head also implies that he's tempted to commit to an affair with her, as he constantly reminds himself as he's a married spud when first meeting her. This model is also implied to be a polygot, or at least bilingual, as she tells Rex to stay in the vehicle in both English and Spanish after earlier disembarking and (in a very similar fashion to a scene from Jurassic Park) chases after the car to get back in.

Another Barbie later appears in the movie belonging to a little girl at the Airport, and it is implied that her owner often drew on her face as she has half of her face (her right half, to be exact) drawn on, as well as telling a recently placed Prospector that her owner is an artist.

A Trio of Barbies (implied to belong to Molly) were also seen with Wheezy acting as the backup singers.

Toy Story 3
A Barbie doll formerly belonging to Molly was placed in the donation box for Sunnyside Day Care. She broke down when learning she was donated by Molly, although she admits they did grow apart. She then meets Ken at the Butterfly room and they strike up a relationship instantly. She ended up staying at the Butterfly room, and were getting along, with Ken teaching her different ways to say "I love you." However, she doesn't know that Ken had another, darker side to him. Later, when she stumbled upon Ken among most of Lotso's minions placing her friends in cubby pins in a manner similar to prisons, she angrily breaks up with Ken, going back to Ken only to retrieve the ascot, and allowed herself to be placed in the same cubby pins. Later, she apparently had decided to go back to Ken, claiming to have had enough of the Caterpillar room. In actuality, she was actually trying to get close enough to Ken to get him to show off his wardrobe in a modeling-esque contest to then interrogate him on how to fix Buzz Lightyear. As planned, he fell for the ploy and then easily subdued him, ironically while wearing his Karate outfit. She then threatens to tear apart his clothing if he doesn't reveal how Lotso changed Buzz. Afterwards, she then donned an Astronaut outfit belonging to Ken to disguise herself to acquire the Buzz manual to revert him back to play mode. Barbie, along with Woody, Slinky, Ham, Rex, and Buzz (who was sort of fixed, as he ended up being switched to Spanish mode instead of relieving him of his brainwashed state.) regrouped with the other Toys and managed to get as far as the trash disposal. However, they weren't able to get truly free due to Lotso's personnel breaking Chatterphone of torture. Barbie later tells Lotso, with surprising understanding of civics, about how it's better to have the toys be treating fairly than be ruled by a dictator. She also forgives Ken when he defects from Lotso's group, who later turned on him. She also tried to save Woody and his friends, but Ken held her back. She later acted as co-owner of the Daycare Center with Ken, and made sure it was good for everyone of the toys there.