Traistana was a female Vissian, a xenobiologist who was part of the Vissian delegation that visited the Enterprise in 2153 as part of a cultural exchange. Commander Tucker introduced her to different Earth foods, including an ice cream sundae in the mess hall. He taught her how to eat it, informing her to eat the cherry first. (ENT: "Cogenitor")

Traistana was played by Stacie Renna.