Seven of Nine (full Borg designation: Seven of Nine, Tertiary Adjunct of Unimatrix 01) was a Human female who was a former Borg drone. She was born Annika Hansen on 1497 N.E., the daughter of eccentric exobiologists Magnus and Erin Hansen. She was assimilated by the Borg in 1503 N.E. at age six, along with her parents, but was liberated by the crew of the USS Voyager in 1521 N.E. She joined the crew and returned to the Alpha Quadrant with the starship in and joined the Alliance of Nations.
Annika was born on the Federation Tendara colony on 1497 N.E. Her favorite color growing up was red. As a young child, Annika often stayed with her aunt, Irene Hansen. Her favorite treats were strawberry tarts, which Irene once used to coax Annika out of a guest room she had locked
herself in. She was very strong-willed and did not hesitate to point out if the strawberries used in baking the tarts were not perfectly ripe. She wanted to become a ballerina in her childhood.