Darth Rictus was a Dark Lord of the Sith and member of the reconstituted Sith Empire's Dark Council. As head of the Sphere of Mysteries, Rictus held the title of Keeper of Mysteries.
By 3640 BBY, Rictus was the oldest member of the Council, even older than the 76-year-old Darth Vowrawn. It was because of this that his opinion of matters was well-respected by the other Councilors. Despite his age, he maintained his status as a powerful Sith and an incredibly competent duelist, though he tended to refrain from physical combat. He also seemed to believed that aliens did not have a place on the Dark Council, asking Darth Marr if he was afraid of Karrid.
After Darth Karrid killed Darth Gravus in an attempt to earn Darth Hadra's now-vacant Dark Council seat, Rictus changed his tune and spoke in support of her, saying that she had acted like a true Sith.
In the midst of the Dread Masters crisis, Rictus initiated the founding of the Dread Executioners to eliminate the Dread Masters, whose base of operations was discovered on Oricon.
Darth Rictus's status following the Eternal Empire conquest was unknown. It is possible he was either killed or fled into hiding, as only Darth Acina and Darth Vowrawn were present on the council following the war. His sphere was later merged into the Sphere of Sith Doctrine, which was led by Darth Anathel.
Darth Rictus was first mentioned in the Star Wars: The Old Republic Encyclopedia, a reference guide for the BioWare video game Star Wars: The Old Republic published by Dorling Kindersley on October 15, 2012. Rictus is the only member of the Council mentioned in the Encyclopedia that does not appear in Star Wars: The Old Republic aside from Darth Aruk.
The Star Wars: The Old Republic: Rise of the Hutt Cartel quest "An Invitation From Darth Acina" is named in the game's files as "An Invitation From Darth Rictus."
- Star Wars: The Old Republic Encyclopedia