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Mario Lemus was an individual who was crazed by the Red Marker on Aegis VII.
Mario was a Miner, Unitologist, and part of Deakin Abbott's group. later until then, he killed a Female with a fire axe, and is arrested by the P.C.S.I. Security Force.
When the outbreak occurred on the USG Ishimura, He was killed by the Necromorphs.