The Clones began experimenting with cyborg supersoldiers fairly early into the Clone Wars. With the help of a renegrade human scientist (Dr Phoebus a.k.a. Dr Anus) the Clones were successful in creating two cyborg soldiers Delta and Epsilon. They were a great success, melding a Clone mind with a powerful robot body. No more were created however due to huge cost of each body. Delta and Epsilon still serve in the HCS but in high command.
The Clones sought a cheaper option and bought in a Dr Penis who was an expert in muscle enhancing drugs. They came up with the Superclone, a hugely muscled freak with a metallic body that contained communication equipment and other utilities. Forty Superclones were created and they formed 2 elite shock units. The HCS did plan 1000s but as the war against the DDS was being won on the ground and moving into space they had a change of policy.
Around 25 Superclones still exist and form a special operations unit. Often they are assigned as backup to Red Lizard on their operations. Unfortunately some long-term effects of the drugs are now being felt including paranoia and depression. Unfortunately Dr Penis and Dr Anus are no more, having killed each other in a bizarre kinky gay sex session involving hedgetrimmers.
