Squad K led by Percy Hazard was sent in arresting Supergirl, Flamebird, and Nightwing for the supposed "murder" of Mon-El. At the behest of General Samuel Lane, the team later reluctantly allowed the criminal Reactron to join in their hunt of the wanted Kryptonians. After arresting the Kryptonians, Hazard and Squad K then realized from them that General Lane had planned in killing them. Shortly realizing this, Hazard and Squad K were then killed by Reactron.
Following after the deaths of Hazard and the original members of Squad K, the team was replaced by new members and led by Sergeant Cloud who are loyal to General Lane.
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