Flyer was a Kzinti crew member aboard the privateer ship Traitor's Claw, under the command of Chuft-Captain, in 2269. On stardate 4187.3, he participated in an operation secretly condoned by the Kzinti government, the objective of which was to regain control of a Slaver stasis box that had been found on Kzin and subsequently delivered into the custody of Starfleet. Having lured the USS Enterprise's shuttlecraft Copernicus to a small, icebound world in the Beta Lyrae system, Flyer and several fellow Kzinti ambushed the shuttle's crew using illegally-possessed phasers, in violation of the Treaty of Sirius. They took Commander Spock and Lieutenants Hikaru Sulu and Nyota Uhura prisoner aboard the Claw, and confiscated the box.