Hot Pants is a jockey who was sent to the Steel Ball Run race in disguise by the Kingdom of Naples and the Vatican in order to interfere with the collecting of the Saint Corpse Parts. Throughout the story she assists Gyro, Johnny, Lucy, and Diego in opposing the American government's plan to gather the Corpse. Hot Pants is also a Stand user and wields Cream Starter.

Hot Pants is a woman of above-average height, medium build, and short straight hair. However, her androgynous traits and loose clothes allow her to pass off as a man.

Hot Pants's whole body is covered by a baggy striped suit that is further covered with a long blouse. It is decorated with metallic decorations of flowers and leaves, is lined with fur, and has a second layer of cloth covering Hot Pants's chest. Hot Pants also has various accessories such as a fur cap decorated with a single spike at its top, furred elbow pads, and assorted leg warmers. She also wears a belt bearing the letters "HP". Hot Pants keeps Cream Starter in two holsters located on both sides of her hip.

Hot Pants speaks in a particularly rough and masculine manner despite her gender, for instance using the pronoun Ore (オレ) to refer to herself. This and her clothes allow her to pretend to be a man and perform her mission under an alias.