The Bad Batch, also known as Clone Force 99, are a group of five Clone Troopers (all voiced by Dee Bradley Baker) who have different genetic traits that give them different skills, ranging from physical strength to technological know-how. More significantly, they are essentially resistant to the reason the clone army was formed in the first place — soldiers genetically predisposed to obey orders without doubt. This group, on the other hand, chooses their own course.
When they return to Kamino, their dissatisfaction and perplexity intensify even more. Force 99, along with the rest of the soldiers at the foundation, watch Emperor Palpatine declare the Republic to be transformed into “the first Galactic Empire” in a scene from “Revenge of the Sith.” Force 99 does not share the enthusiasm of the huge legion of troopers.
Needless to say, Force 99’s more independent thought quickly runs afoul of the Empire’s plans. This helps “The Bad Batch” to explain how the Empire can begin to use its military to extend and enforce its hold on power in the galaxy in a way that “Star Wars” has never done before.