Sienna Contiello, commonly known as Squigly, is a playable character in the fighting game series Skullgirls. Once a renowned opera singer from a prestigious family, she was tragically killed alongside her parents. Revived as an undead by the parasite Leviathan, Squigly seeks to prevent others from suffering her fate and to stop the Skullgirl. Gentle and polite, Squigly plays a pivotal role as a heroic figure, using her unique abilities to fight evil and protect innocents.