Seven of Nine

Seven of Nine (born Annika Hansen) is a fictional character introduced in the American science fiction television series Star Trek: Voyager. Portrayed by Jeri Ryan, she is a former Borg drone who joins the crew of the Federation starship Voyager. Her full Borg designation was Seven of Nine, Tertiary Adjunct of Unimatrix Zero One. While her birth name became known to her crewmates, after joining the Voyager crew she chose to continue to be called Seven of Nine, though she allowed "Seven" to be used informally. Seven of Nine was introduced in the fourth-season premiere, "Scorpion, Part II". The character replaced Kes in the main cast, and was intended to introduce a foil to Captain Kathryn Janeway, similar to the role Spock performs for Captain Kirk in Star Trek: The Original Series. The character appeared through the final episode, "Endgame". Stories related to her relationship with Captain Janeway and with The Doctor appeared throughout the series; some episodes, such as "The Raven", explored her background and earlier life as Annika Hansen before she was assimilated by the Borg. Seven of Nine, again played by Ryan, also appears in the series Star Trek: Picard as a recurring character in the first season before being promoted to series regular for the second and third seasons. Following the third season of Star Trek: Voyager, the production team decided that the main cast character of Kes was to be dropped from the show. It was decided that Captain Kathryn Janeway needed a contrasting character, and so Seven of Nine was developed to fill this role. It had been a previous Star Trek staple to have a character that could provide a third-person view on the human condition, prior examples including Spock in Star Trek: The Original Series, Data in Star Trek: The Next Generation and Odo in Star Trek: Deep Space Nine. In addition, the producers of Voyager had been keen to make greater use of The Borg as recurring antagonists in the show, particularly after the success of the 1996 Next Generation feature film Star Trek: First Contact.