Princess Sally Alicia Acorn is a Mobian squirrel-chipmunk, the younger daughter of the former king Maximillian Acorn and former queen Alicia Acorn, and younger sister to Elias Acorn. Sally is also known as the leader of the Freedom Fighters. She was sent to the sanctuary of Knothole Village by her father when the Great War was going badly for the Mobians, and led the Knothole Freedom Fighters on many field missions against Dr. Ivo Robotnik (a.k.a. Dr. Eggman) when he took power shortly after the Great War's end. She fell in the line of duty during Operation: Clean Sweep when she sacrificed her free will to destroy the World Roboticizer, and during the process, became Eggman's newest robot henchwoman. She was rescued by Team Fighters and Silver the Hedgehog, and is currently being held in the New Mobotropolis Science Center while Uncle Chuck attempts to derobotize he using the Krudzu.

Has a cannon voice. For reference, check here:

https://www.youtube.com/watch?v=HDUPnsll2AA