Protocide Shield

The man who was later to be known as Protocide was found in a SHIELD warehouse by three agents who were tasked with cataloging the various artifacts within. Unbeknownst to two of the agents, one of them was a spy for AIM, who then shot his supposed colleagues and escaped with the crate containing Clinton's body.

Upon discovering that Clinton's body contained a prototype version of the Super Soldier Serum, which had resulted in his death, AIM set about bringing him back to life. The revived Clinton was told his name is Protocide, with his name deriving from the fact he was a prototype. Forgoing any laboratory tests, they pitted him against three security robots, which he defeated quickly and easily.

Thanks to an AI construct, AIM discovered that he was formerly an Army private who killed his commanding officer. He was let out of lock-up by General Saunder and two rogue generals who believed him a better candidate for Professor Erskine's super soldier formula then the skinny and weaker