Stargate Atlantis Season 5 , the series' final season, marked a significant shift in leadership and tone as it wrapped up major storylines involving the Wraith and the rogue Michael Kenmore. Key Character and Leadership Changes

Dr. Carson Beckett returned as a regular recurring character after his clone was rescued and stabilized.

Richard Woolsey (Robert Picardo) took command of Atlantis, transitioning from a bureaucratic adversary to a dependable ally.