Unidentified Kerkoiden commander
A Kerkoiden commander was a member of the Confederacy of Independent Systems during the Clone Wars. This commander took part in the Battle of Christophsis in 22 BBY, leading battle droids from inside his Armored Assault Tank. The Kerkoiden met his death during this conflict when Clone Captain CT-7567 shot and killed him; the commander had exited his tank to gaze upwards at the Confederacy's deflector shield after it was deactivated.
Behind the scenes
Karen Traviss penned the Star Wars: The Clone Wars novelization, which was released in 2009, and that is where the tank commander made his initial appearance.