The Advanced Recon Commando nicknamed "Hammer" served in Rancor Battalion during the Clone Wars. Like all clones, he was born and bred on the rainy world of Kamino. When Rancor Battalion was called back to Kamino, he was assigned to guard the cloning facilities at Tipoca City, alongside fellow ARC troopers Colt, Blitz, and Havoc. Hammer later fought in the Third Battle of Kamino when the Separatists invaded the city.
Hammer wore the experimental version of the Phase II clone trooper armor that was customized with red markings.
He, along with, Havoc, and Blitz took positions in the hanger with several other clones that were ready to attack the Aqua Droids. Even with Havoc's death, he continued to fight against the invaders of his homeworld with Commander Blitz and the rest of the clones and managed to hold off the enemy until Shaak Ti arrived. With the help of the Jedi Master, he and his clone brothers were able to push back the enemy forces. He was last seen supervising the clean up of an area where Blitz was seen, also where Fives and Echo were given the honorary title of ARC trooper.
- Hammer's name was not revealed in his initial appearance or any related media. Only Dave Filoni provided this name, along with the names of ARC Troopers Blitz and Havoc, in a later interview. Since it correctly identified the two aforementioned troopers correctly, this article will grant that interview canonical precedence until a newer source differs on the subject.
- It was initially thought that this Advanced Recon Commando was ARC Commander Colt due to his limited screen time and similar design.
- In 2012, Lego released a Star Wars: The Clone Wars battle pack that featured an ARC Trooper mini-figure that, though unnamed, looks very similar to this Unidentified Advanced Recon Commando.
- "ARC Troopers" (First appearance)