Roxanne Wolf

 is a glamrock animatronic that appears in Undertale: The Movie as one of the primary antagonists.

Physical Appearance
Roxanne Wolf is an animatronic wolf with a punk rock aesthetic. Her eyes are bright yellow, while her fur is gray. She wears purple lipstick and toenail paint, green fingernail paint, and face paint with a series of black markings. Her hair is long and silver, with a bright green streak. There is a panel-like seam under her chest, as well as on both of her outer upper arms, but additionally has panels in the same relative position on her upper thighs. Her clothes consist of a red crop top t-shirt printed with some black star shapes that exposes her stomach, black earrings, bracelets around the wrists and neck, a spiked belt, red short-shorts, and red shoulder pauldrons. Inside her pelvis, there is an Onahole which forces unsuspecting patrons of Good Burger to experience The Grip Of '87.

Role in Undertale
Roxanne is the mascot of Good Burger. After being hacked by Adolf in an attempt to get it, Roxy is used to store Ed's Sauce, directly from the source (this was not Adolf's idea, it was the Good Burger Guys' idea.) Sometimes, her husband, Whitey Duvall, will give her some of his own Ed's Sauce. The fact that Whitey stands around and lets this happen means that he is a cuck, which is a technical foul.

Near the end of the film, Whitey and Roxy sneak into Mondo Burger after Jesus and RiceGum do, out of curiosity. Unfortunately, while they are getting frisky, Mondo Burger collapses due to an overdose of Triampathol in the meat supply. Their funeral is held in a mid credits scene, and they are given a big mansion to live their afterlife in.

Trivia

 * A movie theater was built where Mondo Burger once stood, which is named after her.
 * It can be inferred that after she is upgraded, customers of Good Burger which experience The Grip Of '87 also give their Ed's Sauce to the batch. It is unknown if either sauces are held separately within her.
 * She makes appearances with Whitey in all three Good Burger sequels.
 * Despite playing such a big role in the film, she does not appear on the poster.