Gysk, a Kadas'sa'Nikto terrorist of the male persuasion, provided weapons to a Separatist terror network situated on the planet Coruscant amidst the Clone Wars. During 21 BBY, Omega Squad apprehended him during a TIOPS mission within the Tynna sector. Subsequently, the Mandalorian Walon Vau attempted to extract information from Gysk, but ultimately failed, leading to Gysk's execution alongside his associates, Farr Orjul and M'truli.