Tarrana was a young Boraalan female and part of the group saved from Boraal II by Doctor Nikolai Rozhenko. Her father was Kateras. She was unbetrothed in 2370.

Without her knowledge, she was moved to Vacca VI aboard the USS Enterprise-D in 2370 and became part of the new village established there.

Tarrana became enamored with Lieutenant Worf, masquerading as a Boraalan seer while the group was being transported. Kateras wanted Worf to become Tarrana's mate, much to Worf's chagrin. (TNG: "Homeward")