Alpha Company was a specialized division of elite [[clone trooper]s]in the Clone Army, (including ARC troopers and [BARC troopers). Their company color was gray. They were part of the 52nd Sky Corps and was led by Commander CC-2079. In addition to 144 clone troopers, Alpha Company made use of AT-TE walkers and heavy artillery cannons to combat the Separatist droid army. It was an elite company in the 52nd.
Alpha Company worked with the Coruscant Guard and patrolled the streets in Hosnia Prime's underlevels. They later joined the Clone Rebellion, questioned the goals of the Empire and deserted soon after.