Gysk was a male Kadas'sa'Nikto terrorist who was supplying ordnance for a Separatist terror net on Coruscant during the Clone Wars. In 21 BBY, he was captured by Omega Squad during a TIOPS mission in the Tynna sector. He was later unsuccessfully interrogated by Walon Vau and then executed, along with his accomplices Farr Orjul and M'truli.