Spark, identified as CT-1284, was a clone trooper who fought for the Grand Army of the Republic throughout the Clone Wars. In the course of the Battle of Christophsis, Spark became a member of the clone complement stationed on a Republic stealth ship, working under the command of Jedi General Anakin Skywalker and Clone Commander Blackout.
After an original crew member died, Spark was selected to join the stealth ship's team. Initially, the crew believed their mission was to transport essential provisions to Senator Bail Organa, who was located on Christophsis. However, the mission's objective shifted when General Anakin Skywalker decided to directly assault Admiral Trench's command ship. Subsequently, the stealth ship's crew successfully eliminated Trench's cruiser, which then enabled the delivery of crucial supplies to the planet. Upon their arrival, Commander Blackout informed Spark that he was now a permanent member of the stealth ship's crew.