Clad in armor and uniforms designed to maximize combat efficency in hostile environments, the Galactic Marines are the Republic's front line forces and often take on the most formidable opponents. After the issuance of Order 66, a squad of these troopers betray and shoot down Jedi Master Ki-Adi-Mundi on Mygeeto.

- Species: Human clones created on the planet Kamino
- Status: Clone Troopers specializing in zero-gee combat and planetary assault
- Weapon of choice: Blaster Rifle
- Characteristic: Supposedly allies of the Jedi, but secretly loyal to the Emperor