In their first chronological appearance, Season 3's “Clone Cadets”, the group repeatedly fails to pass a training exercise. RELATED: Star Wars: The Clone Wars Introduces a New Class of Droid They were screw-ups among the other elite soldiers to-be - basically the lovable losers of the Star Wars universe. They were referred to as Domino because in training sessions they would always drop one by one. Fans first met the group - which consisted of Echo, Fives, Droidbait, Hevy and Cutup - when they were cadets in training, and their nickname wasn’t exactly a badge of honor. Well, the Domino Squad was one of the first groups of Clones that were fleshed out and given personalities. But how did how the group grow to such prominence in The Clone Wars? Echo's death left his comrade-in-arms Fives as the only remaining member of the lovable group of Clones known as the Domino Squad. The final season of The Clone Wars features the return of Echo, a long-lost Clone that hasn't appeared seen since Season 3 when he was thought to be killed at the hands of the Separatists. WARNING: The following contains spoilers for 'On the Wings of Keeradaks' the latest episode of Star Wars: The Clone Wars Season 7.

Star wars domino squad