Seven of Nine's long journey to becoming Starfleet captain material starts in Star Trek: Voyager season 4, episode 16, "Prey." Just months after Seven's liberation from the Borg Collective, Seven ...

Seven of Nine served aboard Voyager for years; in the time period of Star Trek: Picard (over 20 years after the events of Voyager), Seven of Nine becomes a Fenris Ranger, ...