Echo

Echo, designated CT-21-0408, was a clone trooper who served in the Grand Army of the Republic during the Clone Wars. Known for "echoing" the standard rules and procedures established for clones, hence his name, Echo lived in Tipoca City, the capital city of the planet Kamino, early in his career, training in its military complex. As a clone cadet, Echo was part of the squad Domino Squad, overseen by the Siniteen bounty hunter Bric. Echo stayed with Domino Squad until the unit passed their final test; the completion of the test allowed the members of Domino Squad to become battle-ready clone troopers. For his first off-world assignment, Echo stood guard at Rishi Station, a listening post located on the moon of Rishi, where he and other rookie clone troopers were stationed. When the Confederate General Grievous implemented an attack on the Rishi Station to capture it before proceeding to Kamino. His plan, however, was thwarted by Echo, fellow troopers Fives, Hevy, and clone officers Cody and Rex. Echo, along with Fives, were rewarded with medals for their service on the Rishi moon and were inducted into the 501st Legion.

Several months later, both Echo and Fives returned to Kamino, and the two were present when Grievous, along with Dark Acolyte Asajj Ventress, initiated their attack on Tipoca City. Following the retreat of Grievous and Ventress, which ended the battle, Echo and Fives were once again given accolades for their bravery and efforts, and became ARC troopers. Echo later participated in the rescuing of Jedi Master Even Piell, who was captured by Confederate forces and taken to the Citadel. Echo and his group—lead by Jedi Generals Obi-Wan Kenobi and Anakin Skywalker—found Piell in the prison, and, as they tried to escape with the Jedi Master, were stopped by the facility's warden, Osi Sobeck, and his battle droid force. As Echo and his team looked for an escape route that would lead them back to their shuttle outside of the Confederate prison, more of Sobeck's security droid forces attacked them. They found their shuttle, although it was being watched by stationed commando droids on various towers around the shuttle's landing platform. When a commando droid began to fire at the shuttle with a laser cannon, Echo tried to stop the droid. Yet, instead, the droid killed Echo, as well as destroying the shuttle in the process.

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