The Senate Commandos was an elite division of the Galactic Republic's Senate Guard, tasked with protecting the Galactic Senate and the Supreme Chancellor along with other high-value individuals. A highly regarded force consisting of the best and bravest members of the Guard, the commandos carried out secret missions on behalf of the government. They were also distinguished from the rest of the Guard by their armor, which was made to be more flexible and battle ready than the ornamental uniforms of their rank-and-file counterparts.
During the Clone Wars, Captain Faro Argyus, an officer of the Senate Commandos, betrayed the Republic by assisting the Separatists with the rescue of Trade Federation Viceroy Nute Gunray. With the fall of the Republic, the Senate Guard was phased out and replaced by stormtroopers and the Imperial Royal Guard of Emperor Palpatine.
Senate commandos first appeared in the Star Wars: The Clone Wars film.
For their appearances in The Clone Wars film and series, their model used the same basic body of a clone trooper, with a custom blue paint job, different head, and a large scarab-like shoulder pad with the Senate seal for the captain.