Mike Peterson, father of Ace Peterson, was a factory worker who, after suffering an injury, decided to join Project Centipede with hopes of changing his life. After one of the laboratories of Project Centipede suffered an explosion, Mike went to the aid of his suppliers, and rescued the life of a doctor. He was publicly seen, and mainly caught the attention of the Rising Tide member Skye. He later teamed up with S.H.I.E.L.D. in an attempt to neutralize the threat of Centipede, but it was in vain, as Agent Coulson was captured, and Peterson, attempting to save Coulson, ran into a trap where he was caught in an explosion, losing his right leg and severely burning his body; although Centipede recovered him, giving him a robotic leg and thus dubbing him "Deathlok".
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