The D.R.A.K. or Destructive Ranged Army Killers, were a special form of clone trooper that were stronger then other clones, trained under extreme conditions, which killed the first types, and had complete free will which gave them more advantages then other clones even the ARC troopers who had some more free will then other clones. Alpha 254 was the first D.R.A.K. clone to pass the training alive and from then on D.R.A.K. clones were modeled after him only a bit stronger.