The world of Star Trek is compelling not just for the fascinating science fiction stories it tells, but for the characters who make those stories feel real. Seven of Nine, a former Borg played by Jeri Ryan, is a character from the Star Trek: Voyager series. Her level of popularity is comparable to other heroes that include Spock and Benjamin Sisko, and her story is one of the most interesting in a vast library of lore.
Seven of Nine was introduced in the episode "The Scorpion, Part II" and it remains one of the most popular Star Trek episodes ever, partly because of her introduction. Despite the popularity of everyone's favorite de-assimilated Borg, there's a lot even hardcore fans don't know about Seven of Nine.
6 Tertiary Adjunct Of Unimatrix Zero One
Seven's name on the show was derived from her name as a Borg. Her full title when she was part of the collective was Seven of Nine, Tertiary Adjunct of Unimatrix Zero One. Since that was a bit of a mouthful, and she was still too emotionally and physically distant from her former self to use her original name of Annika Hansen, the crew used the name "Seven."
An important and interesting part of Seven's character arc was coming to terms with her former human life. She wasn't just assimilated, but was taken as a child and essentially raised by the Borg, which is a question that audiences had been asking ever since the Borg appeared as an entity in the Star Trek universe.
5 Her Birthplace
Considering how popular Seven of Nine is in the Star Trek universe, it's odd that this bit of essential information was never determined. There are actually two possible locations for the birthplace of Annika Hansen: the planet of Heronius II, or a Federation settlement known as the Tenadra Colony.
Some details are the same regardless of what lore comes up first. Fans know that she never visited Earth, and that she joined her parents on their ill-fated mission to investigate the Borg. Their ship was brought into the Delta Quadrant through a wormhole the Borg had created, and they were able to study their subjects up close for an extended time before their shields failed.
4 Aboard The USS Raven
This was the name of the ship that took the Hansen family into the Delta Quadrant, and in some versions of the lore it doesn't have a name. Although it was a Federation ship, the USS Raven was an Aerie class, which means it wasn't combat-capable but used for scientific research and basic transportation.
After the Hansen family was assimilated, the ship was abandoned and eventually crashed on an unnamed moon in B'omar space. Seven would eventually find it again as a crew member of Voyager, when it appeared in a few episodes that shed more light on her past before it was finally destroyed.
3 She Turned Six In The Delta Quadrant
Here's another instance where there seem to be two different versions of an important detail about Seven's life. In one version of the lore, she was six years old before the Hansens set off on their fateful trip to study the Borg. This detail was revealed by her Aunt Irene in the Voyager episode "Author, Author," along with describing Annika as a determined child who had a fierce desire for strawberry tarts.
However, this is contradicted by another Voyager episode, "The Raven." While Seven and her parents were aboard the ship, she had a birthday party, and the cake was decorated with six candles. It was a cheerful event, but had an ominous tone. This was the last birthday she had for some time, because after assimilation, she spent five years in a Borg maturation chamber. She would spend 18 years in the collective before the encounter with Voyager.
2 The False Colors Comics
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Graphic novels were popular in the late 1990s, and there was one that featured the lore of Voyager and Seven of Nine as the main character. The story takes place during the long voyage home when the crew finds what looks like a debris field from a destroyed Borg ship. Closer examination reveals some compelling pieces of technology that might prove useful, plus Seven is getting some unique signals from the wreckage, so the ship makes a stop for salvage and research purposes.
It turns out the Borg ship is still functional after all, and a small team of crew members, including Seven of Nine, disguise themselves as drones to infiltrate the ship and try to take it over by building a miniature collective led by Seven. Their plan works until the Borg threaten to assimilate Seven again.
1 She Appears In Star Trek Online
This MMORPG flies under the radar in what's now a saturated market, but the concept of Star Trek makes for a great massive multiplayer online game. Other video games that take place in the Star Trek universe don't use Jeri Ryan's voice, but the MMORPG does.
This isn't the older game from Perpetual Entertainment that dates from 2008, but the free-to-play game that's currently available from Perfect World, the gaming company previously known as Atari. In the game, Seven is known as Commander Hansen and her Borg implants are almost completely gone. She's left Starfleet to work for the Daystrom Institute and her specialty is, of course, the Borg.