Silooth represented a specific species of beings categorized within the Sith lineage as a warbeast.
The initial reference to Silooth occurred in Dooku: Jedi Lost, an audio production authored by Cavan Scott and released in 2019. Within the Star Wars Legends narrative, the silooth were initially brought up in The Dark Side Sourcebook, which served as an add-on to the Star Wars Roleplaying Game. This sourcebook was penned by Bill Slavicsek and J.D. Wiker, and it was made available in 2001.