Hot Pants competes in the Steel Ball Run race while posing as a man, but is later revealed as an agent of the Kingdom of Naples and the Vatican, and her main goal is to gather the Saint Corpse Parts. She acts as a distant ally yet rival to Gyro, Johnny, Lucy, and Diego. Hot Pants is a Stand user and wields Cream Starter.

When she was a child, Hot Pants went to collect nuts in the woods with her younger brother. Attacked by a grizzly bear, they hid in a rock crevice. Injured and scared, Hot Pants pushed her brother out of the crevice - saving herself at the price of his life. The people in her hometown were very kind to her and her parents after the "tragic accident", but Hot Pants became unable to bear the burden of the truth surrounding her brother's death.

Hot Pants left her home and joined a convent in Italy, becoming a nun in the hopes of earning forgiveness from God and her brother. At one undisclosed point in life, she acquired Cream Starter. Working for the Kingdom of Naples and the Vatican, she was then sent on a mission in the United States, participating in the Steel Ball Run to gather the Saint's Corpse under a false identity.