He was seen briefly during the Third Battle of Kamino, commanding a squadron of clone troopers, alongside Commander Havoc, in the main hangar bay to fire at an approaching platoon of Aqua droids and a Trident drill. He and Commander Blitz were the only two ARC troopers to survive the battle. He was later seen in the area where Echo and Fives got promoted to ARC troopers.
Behind the scenes
A LEGO version of this ARC trooper appears in the Lego Star Wars Set 9488 Elite Clone Trooper & Commando Droid Battle Pack.
Other sites name this ARC trooper "Hammer", because of a group of cosplayers that named their characters with this armor. Another trooper, Blitz was officially named after these cosplayers dressed up, so it is assumed his name is Hammer.