Domino Squad

Domino Squad was a military unit of clone trooper cadets stationed on the planet Kamino during the Clone Wars. The members of the squad, at first, proved unable to effectively work together as a team, but they ultimately passed their tests on Kamino and became full members of the Grand Army of the Republic.

After graduation, they were stationed at Rishi Station on the Rishi Moon, a strategic point on a route to Kamino. The majority of Domino Squad perished: CT-00-2010 "Droidbait" died during a Separatist attack on the base, CT-4040 "Cutup" was eaten by a Rishi eel, and CT-782 "Hevy" sacrificed himself to blow up the outpost. The survivors CT-1409 "Echo" and CT-5555 "Fives" were subsequently absorbed into the 501st Legion. During a mission on Lola Sayu, while escaping, Echo noticed a commando droid targeting a shuttle with a laser turret. He advanced to secure their ship, ultimately being blown up with the ship in a massive explosion that led his comrades to believe he was killed. Despite the loss of Echo and Piell's death later during the mission, it was ultimately a success.

While on a mission in Ringo Vinda, Fives saw Tup killing Jedi Master Tiplar and finding out all the clones had inhibitor chips in their heads which made them follow orders without question, Fives was accidentally killed by Fox before he could reveal Palpatine's plan, which led to Order 66. Unbeknownst to everyone, Echo survived the explosion, but was gravely injured and was taken prisoner by Separatist forces and kept alive via cybernetics. Eventually CC-7567 "Rex" and Clone Force 99 rescued him. Echo was the last surviving member of Domino Squad.

Text and facts from the “Domino Squad” article on Wookieepedia, licensed under CC BY-SA 3.0. Modified for this site.