Sarah Vowell
In 2004, Vowell provided the voice of Violet Parr, a shy teenager, in the Pixar animated film "The Incredibles", and returned to her role for the film's sequel, "Incredibles 2", in 2018. Additionally, Vowell has also lent her voice to the character for various related video games and "Disney on Ice" presentations in the years following the film's release. The makers of "The Incredibles" discovered Vowell from episode 81 – "Guns" "This American Life", where she and her father fire a homemade cannon. Pixar made a test animation for Violet using audio from that sequence, which was included on the DVD of "The Incredibles". She also wrote and was featured in a documentary included on the same DVD entitled "Vowellett - An Essay by Sarah Vowell", where she reflects on the differences between being superhero Violet and being an author of history books on the subject of assassinated presidents, and what it means to her nephew Owen. Vowell also played Fernanda, Theacher "Aunt" Deborah and Mary Kelly in "The School Future".
Violet Parr
Bird had always been more interested in developing the personalities of the film's main characters than their superpowers. When it came time to determine the Parr family's powers, Bird decided to draw inspiration from the roles of typical nuclear family members, basing both their superpowers and personalities on these traditional archetypes. Describing Violet as "a typical teenager ... not comfortable in her own skin" who resides "in that rocky place between being a kid and an adult", Bird felt that invisibility would be the most suitable power for the Parr family's only daughter. Describing her as a young woman who would much prefer if other people avoided looking at her, Bird elaborated that some teenage girls are prone to feeling insecure and defensive, and thus gave her the abilities to become invisible and create protective shields. According to Vowell, Violet's superpowers of invisibility and force fields are, much like the rest of her family, "psychologically representational of who she is"; a teenage girl who longs to remain hidden and protected; the actress described her as a young woman "trapped between childhood and maturity, between self-confidence and insecurity" like many teenagers. Bird sought to balance the adventurous and "ordinary" components of the family's lives, explaining that audiences would appreciate and relate to moments when Violet uses her powers in the event that she feels humiliated. In terms of music, composer Michael Giacchino developed a theme for Violet that he described as "coy and mysterious".