A few minutes at his secret lab was all it took for Doctor Ixcel to clone Sam Smith with his infamous "biomass". Ixcel's newest agent looks and acts just like Sam Smith, but the biomass has given him incredible strength and shape-shifting powers. Plus Ixcel programmed in a deep loathing for N Corporation, and it's leader Charles Locke. Now this amped-up Sam is on a mission of vengence even he doesn't understand.
One more thing- the Clone believes that he is the true Sam Smith, and the other is his clone. He attributes his new abilities to Ixcel's experiments, and secretly pities the other Sam.