Cortez was supposedly killed by Exodus in Avengers (1st series) #369, but turned up alive in Magneto (1st series) #1. There was a vague implication in Magneto: Dark Seduction that Mister Sinister's cloning facilities were responsible for his return. Cortez was killed again in Magneto: Dark Seduction #4, but was resurrected by Selene during Necrosha, as seen in X-Force (3rd series) Annual #1. Several unidentified reanimated mutants reportedly escaped the Necrosha event still alive, which presumably accounts for Cortez's subsequent appearances. He died again in conflict with the O*N*E techno-organic Sentinels in Uncanny X-Men (5th series) #22, but Krakoan Resurrection Protocols brought him back prior to S.W.O.R.D. (2nd series) #1.