Uranus made her first appearance in Battle Arena Toshinden 2, as an unlockable boss. She also appeared as an unlockable boss in both the Game Boy version of Battle Arena Toshinden and the Japan-only spin-off Puzzle Arena Toshinden. She is also the main antagonist in the OVA.
She is the power-hungry second-in-command of the Secret Society, a criminal organization, and is rumored to be plotting to overthrow its current leader, Master. Prior to joining the Secret Society, Uranus was an ordinary woman and the girlfriend of Duke B. Rambert.
When she learned that Gaia, one of her co-workers, had hosted the first Toshinden tournament behind the Secret Society's back, she declared him a traitor and marked him for death. However, Gaia escaped and went into hiding. She then send him an invitation to the second tournament in an attempt to lure him out. Although Gaia indeed entered, Uranus was eventually killed herself, along with Master, by him and the rest of the fighters he had alligned himself with during the tournament.
During the events of the fourth tournament, a girl named Puella Marionette carries Uranus' bow and it is strongly implied that Uranus was her mother.