Vin, designated as RC-1134, was a male clone originating from the genetic material of the Mandalorian bounty hunter named Jango Fett. He was brought into existence on the planet of Kamino by Kaminoan cloners, with the purpose of serving in the Grand Army of the Galactic Republic. Trained to be a clone commando, Vin was a member of Theta Squad, dedicating his life to serving alongside his squadmates Darman, Jay, and their sergeant, Taler. During the Clone Wars, the squad was deployed to the planet Geonosis during the first battle. There, they fought alongside another commando unit, Delta Squad, against the forces of the Confederacy of Independent Systems. While engaged in combat inside of a network of caverns beneath the planet's surface, Theta Squad provided covering fire for Delta Squad as they advanced through a compromised blast door. However, Geonosian warriors overwhelmed Vin, Jay, and Taler, ultimately killing them and leaving Darman as the only surviving member of Theta Squad. Vin, like all clone troopers, had a height of 1.83 meters.
The character RC-1134 initially appeared in Republic Commando: Hard Contact, a novel authored by Karen Traviss which was published in 2004. Later, his name was mentioned in other books from the Republic Commando series.