In another instance involving bullets, Entity FX had the job of digitally creating kryptonite bullets, which were fired at Clark in the episode "Extinction". John Wash and his team discussed ways to make the kryptonite bullets unique in their own right, so they decided that since the bullets were made of kryptonite that they might have some kind of reaction to the atmosphere as they flew through it. The computer effects team then created a "green aura, with a little plasma envelope around the bullet" as it flew through the frame, in slow-motion, toward Clark.