During the Jedi Civil War, Sith Knights were less numerous than the Sith Marauders, a Sith Warrior variant. Around this time, a Sith Knight under the direct command of Darth Revan trained the Sith apprentice Darth Voren.
Much later, the term was used to describe a group of Separatist force users who served in the Clone Wars. They participated in the Hunt for the Decimator, under the command of the Chiss Dark Acolyte Sev'rance Tann. Sith Knights were trained at Sith Temples.
Sith Knight was also another term for the rank of Sith Saber within the Lost Tribe of Sith. When the Sith Meditation Sphere Ship arrived on the planet Kesh in 41 ABY, all of the tribe's Sith Knights learned how to navigate the craft.
During the pre-production of the 1999 movie Star Wars: Episode I The Phantom Menace, conceptual sketches of a potential "Sith Knight" were produced by Concept Artist Ed Natividad.
In the 2001 video game Star Wars: Galactic Battlegrounds and its 2002 expansion pack, the Sith Knights were voiced by Michael Gough.
- Star Wars: The Annotated Screenplays
- Star Wars: Galactic Battlegrounds: Prima's Official Strategy Guide
- "Unknown Origins" — Star Wars Insider 92
- "May The Facts Be With You: Part One: #1-50" — Star Wars Insider 93
- The Making of Star Wars: The Definitive Story Behind the Original Film
- Knights of the Old Republic Campaign Guide
- "May The Facts Be With You: Part One: #1-50" — Star Wars Insider Special Edition 2010
- Star Wars Year by Year: A Visual Chronicle
- Star Wars Year by Year: A Visual Chronicle, Updated Edition
- "Blaster" — Star Wars Insider 142
- "The Star Wars" — Star Wars Insider 144