Seven of Nine

Seven of Nine is a character in . She is an ex-Borg and is the science officer on the star ship Voyager.
When she was very young, Seven of Nine was taken on an expedition by her parents, who were studying the Borg. They were all assimilated; Seven of Nine and her parents (this is when the Borg change people or other aliens into Borg).
According to the Borg, Seven of Nine is the first Borg to go back to the life she had before being assimilated.