Marvel: Crisis Protocol – Bastion, Nimrod & Omega SentinelAdd to Wishlist (21) Since their creation, Sentinels have been programmed to hunt down mutantkind, and like their targets, Sentinels have also evolved. No longer thoughtless machines, Omega Sentinel, Bastion, and Nimrod have all developed their own machinations, strategies, and plans for both mutant and mankind. So while these may be the most effective Sentinels to date, mankind may also find itself on the receiving end of the Sentinels protocol.