Kriosian are tall, slender humanoid members of this species share similarities in their skin pigments -- a dark-spotted, skin pattern along the hairline and down the neck and spine -- with the Valtese, not unlike some Trill hosts.The Kriosian system is controlled by the Klingon Empire. In 2367, Captain Picard and Klingon Ambassador Kell met with Klingon Governor Vagh at Krios, following a Kriosian revolt that the Klingons believed had been supported by the Federation. The inhabitants of Krios had been at war with the neighboring system, Valt Minor, for centuries. In 2368 an historic Ceremony of Reconciliation was held in hopes of ending the centuries of conflict.