Krag was the chief investigator of the Tanugan security force in 2366.

He requested Commander William T. Riker's extradition under suspicion of the murder of Doctor Nel Apgar. After witnessing evidence on the holodeck which cleared Riker, Krag withdrew his extradition request. (TNG: "A Matter of Perspective")

Krag was played by actor Craig Richard Nelson.
His suit was later re-used and worn by a member of the Federation Archaeology Council in the episode "Qpid".
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