Clone assassin

Clone Assassins were one of the clone troopers to be deployed to the Jedi Temple to ensure the execution order carried out by Emperor Palpatine/Darth Sidious was successful. Darth Vader asssigned them to protect the signaler that would lure other Jedi in the Galaxy into to his trap. Before Obi-Wan could get to the signaler, he would had to face and defeat the clone assassins to get to the signaler and warn the other Jedi of the trap.

In Battlefront I and II, clone assassins were used as snipers. Most at a captain rank. All snipers had to get special training to improve their eyesight so that they could use their sniper rifle to take out any enemy treats in the battlefield.