Darth Dimicatio was a female Chiss Sith Lord during the Sith Crusade who led the conquest of Gala. She was the first known learner.
She was later placed in command of Sith operations on Yavin IV when a Jedi task force infiltrated the Sith garrison on the planet.
It was unknown whether she joined the Sith ranks before or after Csilla fell to Sith forces in 56 ABY.
Dimicatio was killed by the Sith and the Galactic Commonwealth during the Battle of Ruusan by Tenel Ka, when she attempted a coup.