Martian General Z-9 is a well-known general of the Martian military, and is served by his right-hand robot counselor Dish. He initially served for the Martian Queen and Martian Commander X-2, but secretly plotted to take over both Earth and Mars as their new ruler after a peace meeting between Earth and Mars went off bad thanks to Dodgers' antics. To start off, Z-9 managed to capture Star Johnson after the latter learns of the general's plot. Z-9 then staged a military coup on Mars by taking the Martian Queen as prisoner and sending X-2 on the run as a wanted criminal, declaring himself the new Martian King and Commander. Z-9 then plans to get hold of the shut-down codes of Earth's shield system by staging up a false peace treaty between Mars and Earth to finalize his invasion on Earth. Fortunately, Duck Dodgers manages to rescue Cadet, X2, and Captain Johnson and they collaborated to keep the codes away to safety and save the Queen from Z-9's grasp during a battle between Z-9's forces and Earth. However, Dish is killed by the Martian Queen, and Cadet uses Dish's head to knock the treacherous general into the ship's control panel, shocking him into unconsciousness and defeating him for good. Following the aftermath of the battle between Earth and Mars which ended in ceasefire, Z-9 is arrested for his treason and crimes against Mars and Earth, sacked of his ranks, and sentenced to lifetime in prison. He is last seen sharing a cell with the Andromeda Annihilator, who subjects the former general to painful torture, much to his dismay.