A Vigo or underboss was an individual acting as a deputy on behalf of the leader of a criminal organization, making alliances and ordering executions. Vigos had subordinates of their own, called lieutenants. Rynscar was an Underboss of the Black Sun who lived during the last years of the Galactic Empire and was based on Nar Shaddaa.
- Star Wars: The Clone Wars film (First appearance)
- Star Wars: The Clone Wars – "Assassin"
- Star Wars: The Clone Wars – "Evil Plans" (Appears in hologram)
- Star Wars: The Clone Wars – "Hostage Crisis"
- Star Wars: The Clone Wars – "Hunt for Ziro"
- Star Wars: The Clone Wars – "Eminence"
- Aftermath: Life Debt (First identified as underboss)
- Aftermath: Empire's End (Appears in hologram)
- Star Wars: Build the Millennium Falcon 44 (Starship Fact File: Sith Infiltrator: Scimitar) (First identified as Vigo)
- Star Wars: Build Your Own R2-D2 16 (Droid Directory: IG-Series Assassin Droids)
- Star Wars Helmet Collection 6 (Databank A-Z: Jar Jar Binks–B'omarr Order)
- Star Wars Helmet Collection 39 (Databank A-Z: Kwazel Maw–Sly Moore)
- Star Wars: Smuggler's Guide
- Allies and Adversaries
- Collapse of the Republic