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Prime Sentinels
Formed 1997•10 members•77 series•217 issues
Ordinary humans secretly implanted with Sentinel nanotechnology by the renegade Bastion during his government-sanctioned Operation: Zero Tolerance. Activated as sleeper agents, they became armored, mutant-power-disrupting cyborgs, first unleashed against the X-Men in X-Men vol. 2 #64 (1997).