The Chalnoth were a species with cranial ridges like the Klingons and the Nausicaans. (TLE novel: The Art of the Impossible)

While attending Starfleet Academy, cadets Jean-Luc Picard and Cortin Zweller encountered Chalnoth mercenaries on the planet Yrskatdon while seeking medical attention for their classmate Marta Batanides. (SA comic: "Judgment")

While serving as Captain of the USS Stargazer in 2354, Picard was dispatched to the Chalnoth homeword of Chalna (known on Federation star-maps as Kaus Borealis Five) in order negotiate dispute about a Federation reseach colony on the planet Ynathaia, that the Chalnoth claimed as their own. Picard defeated a Chalnoth champion in a trial by combat, through which Picard secured the safety of the colony until their research was done. (TNG comic: "Children of Chaos")

In 2366, A Chalnoth named Esoqq was kidnapped (along with Picard and several others) by a previously unknown (and unnamed) alien race that was studying the concept of leadership. (TNG episode: "Allegiance")

In 2370, while investigating the disappearance of a Federation vessel called the USS Aquitaine near the planet Beta Scoraata II, the USS Enterprise found both the Aquitaine and the Chalnoth vessel Blade seemingly abandoned. An away team from the Enterprise rescued the crews of the Aquitaine and the Blade from an indiginous creatures that had encased both parties coocoons, while Picard dealt with Chalnoth warships in orbit. After producing the rescued Chalnoth to the Chalnoth captain, Pathox, the Enterprise and the Aquitaine were allowed to leave the system unmolested. (TNG comics: "Children of Chaos", "Mother of Madness", "Brothers in Darkness")

In early 2377, a Chalnoth bounty hunter named Grauq unsuccessfully hunted the Cardassian woman known as Iliana Ghemor of the so-called Mirror Universe on the planet Harkoum, but was killed during the pursuit. (DS9 novel: Warpath)


Chalnoth article at Memory Alpha, the wiki for canon Star Trek.

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