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Trion was a very lethal gas often favored by bounty hunters. Trion gas was blue when not exposed to oxygen. If exposed to oxygen, however, it was almost invisible making it very stealthy. IG-88 was known to use trion gas.
Sources
- Star Wars: The Visual Dictionary (First mentioned)
Star Wars: Power of the Jedi (Pack: IG-88 (Bounty Hunter)) (backup link)- The Official Star Wars Fact File 4 ASS 1-2: IG-88 Assassin Droid
- The Official Star Wars Fact File 22 ASS 3-4: IG Assassin Droids
- Star Wars: The Complete Visual Dictionary
- The Official Star Wars Fact File Part 11 IGS 1-4: IG-Series Droids
- Lords of Nal Hutta
