Captain Cosmia was a female Orion who commanded an Orion Interceptor during the late 24th century.
While delivering dilithium in 2381, Cosmia's ship encountered a small vessel of unknown design. Cosmia decided to plunder it, despite her first officer Z'oto's objection that it would delay their shipment. However, her ship's systems suddenly began to shut down. (LD: "Something Borrowed, Something Green")
Cosmia and Z'oto found themselves betrayed by their junior officers and marooned on Sherbal V. The two claimed a territory around an unmanned Federation monitoring station that contained trees with fruit, and began fighting for resources with the former commanders of several other ships who had also been stranded on the planet. According to Ma'ah, Cosmia's combat skills were not to be underestimated.
Cosmia was skeptical when Lieutenant jg Beckett Mariner urged all the stranded officers to work together towards rescue. However, she was cowed by the appearance of Lieutenant jg D'Vana Tendi, whom she acknowledged as the Mistress of the Winter Constellations. Cosmia then fought alongside Ma'ah and the rest to retake the IKS Che'Ta' from his mutinous crew. (LD: "The Inner Fight")