ECHOFormer ARC Trooper Echo joined the Bad Batch towards the end of the Clone Wars after his rescue from the Techno Union. During his years as a soldier in the Grand Army of the Republic, Echo proved to be among the bravest clones, integral in the defense of Rishi Station and Tipoca City. As part of Clone Force 99, Echo's knowledge of proper military tactics and strategy provides valuable insight, while his socket-arm and cybernetic implants give him the unique ability to interact with computer systems.