Scythe, designated CT-9544, was a clone trooper who served during the Clone Wars in the Grand Army of the Republic's Tango Company. In the wake of the Second Battle of Geonosis, he was infected by a Geonosian brain worm and became the instigator of a brain worm plague among his comrades aboard Republic medical frigate TB-73. Bringing many more eggs onboard, he began to infect the rest of the troopers and eventually infected Jedi Padawan Barriss Offee. However, they were eventually saved by Padawan Ahsoka Tano.
Scythe wore Phase I clone trooper armor that had blue markings consistent with his unit. He had a tattoo of a tiger's mouth and fangs on his forehead.