Slag Four was a male Mandalorian clone pilot. He had been created on the planet Kamino. He was a member of the stafighter squadron, Slag Squadron. He and his fellow squadmates served during the Clone Rebellion. During the Battle of Toola, he served as one of Nathaniel Kenobi's wingmates. He was caught in a tractor beam, from the newly created Super Star Destroyer, Resistance Crusher and killed.