Droxine was the daughter of Plasus, the high adviser of Stratos on the planet Ardana. She lived a privileged life in the cloud city above the planet's surface. She, like her father, believed the Troglytes to be inferior beings.

She appeared to be quite interested in Spock, who uncharacteristically referred to her as "a work of art." Spock discussed the Vulcan mating ritual pon farr with Droxine. (TOS: "The Cloud Minders")