Checkmate is a secret operations agency. Checkmate is a governmental "spy" agency with the hierarchy revolving around the pieces in the classic board game, Chess, with Kings & Queens being the leaders, the Bishops oversee missions behind the scenes, the Rooks plan the missions, the Knights carry out the missions and the Pawns are the support staff. The agency was set up by Amanda "the Wall" Waller as its first Queen to serve as a branch of Task Force X and Alan Scott being the first white King which also included the black ops organization called the Suicide Squad. Also designations of Black or White indicate whether their specialty is Operations (Black) or Intelligence (White).
The Agency was first set up by Amanda Waller to serve as a small branch of Task Force X under the command of Colonel Valentina Vostok (formerly Negative Woman of the Doom Patrol) to perform operations worldwide considered vital to the security of American interests. She relinquishes command to Harry Stein, who recreates The Agency into a new image and organization, dubbed Checkmate, in relation to its chess-inspired organization scheme.
The organization's headquarters is a castle in the Swiss Alps known only as "The Castle."
Checkmate! was at various times involved with the other government agencies primarily the Suicide Squad, which resulted in the crossover "The Janus Directive."
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