Violet Parr
Vowell stars in a documentary about her work in the film, "Vowellet: An Essay by Sarah Vowell", which is included as a bonus feature on "The Incredibles"' 2004 DVD release. In the "video essay", Vowell discusses the various differences between voicing a superhero and becoming an action figure while she was writing about presidential assassinations, contrasting the two distinct careers. The animators also animated Violet to some of Vowell's dialogue from the documentary. Bird, who voices costume designer Edna Mode, was the only other actor Vowell recorded with while working on both films. The director would sometimes temporarily provide the voices of other characters for Vowell to act opposite of, such as Elastigirl in lieu of actress Holly Hunter. For "Incredibles 2", Vowell had not been allowed to read to entire script while recording her dialogue, having only been allowed to preview small excerpts in which Violet is speaking or having conversations with other characters. Until watching the film for the first time, Vowell had been under the impression that "Incredibles 2" would mostly be about Violet's anger at her father until experiencing the film's other storylines and characters. Despite 14 years separating the releases of the first and second films, Vowell did not find resuming the role to be difficult, identifying Violet as a character to whom she feels "closely tied", having played her for approximately one-third of her life. Syfy Wire's Heather Mason observed that Vowell shares her dry sense of humor with Violet. To-date, the "Incredibles" films remain Vowell's only animated film roles.
Violet Parr
Although the films are set roughly during the 1950s and 1960s, shading art director Bryn Imagire opted to incorporate a more modern style into Violet's wardrobe, feeling that the hourglass silhouette, poofy skirts and tight shirts young women typically wore during this time period were not as suitable for the character due to her shy, withdrawn personality and hairstyle. Although the animators admitted to using mid-century fashion "as a jumping-off point", they deliberately designed Violet's clothes to be more baggy in appearance with a "very desaturated" color scheme, incorporating a variety of cut-off jeans, sneakers and sweaters into her attire to compliment her rebellious personality. Furthermore, the majority of the character's clothing during the first film are variations of the color purple, alluding to her name. Violet was costumed in a pink shirt towards the end of the film in order to demonstrate that she is now "much more open– sort of like she’s blossoming as a teenager." Imagire identified the character as "the perfect example of where we didn’t go mid-century; we went modern with her" instead. For the sequel, the increasing complexity of Violet's force fields required the animators to create new effects; although they remain visually similar to the first film, Violet "is able to do more with her force fields, so we had to figure out how that changes the look of her force fields," including sound effects and static as they interact with other objects, according to effects supervisor Bill Watral.