M'Rek
Chancellor M'Rek was chancellor of the Klingon High Council in the mid-22nd century; he ascended to the position sometime after 2151. Rumors had been going around that he was fond of Orion slave girls.

While in pursuit of a  hijacked by Augments, , disguised with a Klingon warp field, was contacted by a Klingon battle cruiser. Captain Jonathan Archer fooled the commander into withdrawing by claiming that he was transporting Chancellor M'Rek back to Qo'noS from negotiations with the Orions. ()

See also 
 Augment Crisis

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Klingons
Klingon government officials