Princess Sally Acorn is the tomboyishly beautiful crown princess of Mobius and Sonic's love interest. She is the 16 year old strategist and leader of the Knothole Freedom Fighters (although she often calls Sonic the leader). Sally hacks into Robotnik's computers to find important targets in Robotropolis. Intelligent and cautious and despite her beauty, Sally also shows egotism and spontaneity in many instances. She refuses to believe that her father is dead, and continues to search for him. In season one, Sally was more self-righteous and competitive towards Sonic, leading to blunders of her own. In season two however, she is more mellow and competent, usually playing the Straight Man of each mission.