Lisa Lionheart was designed to provide a more positive role model for young girls, placing it into direct competition with the Malibu Stacy line of dolls. Fearful of what could happen to Malibu Stacy if Lisa Lionheart is a success, the creators tried to stop Lisa's campaign against them by bribing her with a promise to help renovate Malibu Stacy into the nineties as a fashion forward, positive role model. However, she doesn't listen knowing that anything they have Stacy say and do is sexist. After seeing the news with Kent Brockman on it praising the Lisa Lionheart doll with his own daughter playing with another one, the desperate creators try one last ploy to sink Lisa Lionheart. When the Lisa doll was first released, all the young girls -- as well as Malibu Stacy collector Waylon Smithers, who yelled: "I want it, I want it, I want it!" -- were after it. However, before they could reach the Lisa Lionheart display, they were literally intercepted in the store by a cart of talking Malibu Stacy dolls with new hats, leading to the complete failure of Lisa Lionheart. However, Nina was the only one to buy one and Lisa is able to hope that one.
She has blonde hair in a ponytail and red lips. She's usually been seen wearing a lighter blue T-shirt, black jeans with a red belt, and black slip-on shoes with a pair of socks.
The Lisa Lionheart doll appears in the video game The Simpsons: Hit and Run as a collector card in level 3.