Challat eater droids were small, repulsorlift-equipped assassin droids modeled after the challat eaters of Troiken. They swarmed victims and cut them repeatedly until the victims bled to death. A swarm of such droids, directed by Princess Tsian's remote control, attacked Simon Greyshade. When Sagoro Autem rendered Tsian unconscious, the remote link was cut, and the droids shut down.