Organization
Checkmate.
fictional covert operations agency within the DC Comics universe
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About Checkmate
Checkmate is a fictional covert operations agency appearing in American comic books published by DC Comics. The antihero team first appeared in Action Comics #598 and proceeded to have its own ongoing title in Checkmate!. In the wake of events depicted in the mini-series The OMAC Project and Infinite Crisis, Checkmate is re-chartered as a United Nations Security Council-affiliated agency and was again given its own series, Checkmate.
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