Dark Jedi/Legends

Dark Jedi were Jedi who chose to deny the Light Side of the Force and follow the Dark side. Dark Jedi were not the same as Sith, although some were both Dark Jedi and Sith practioners, such as Darth Vader.

Notable Dark Jedi included Mara Jade, Asajj Ventress, Jerec, and Isrek Ismeren.