: When SAR's weapon pierces the heart, Robot’s data is transferred directly into SAR’s body, effectively overwriting SAR and ending the threat. Epilogue: A New Beginning
: Upon returning to Alpha Centauri, Will confronts SAR. SAR attempts to kill Will by stabbing him in the heart once more. However, this was a calculated move: Robot had transferred its consciousness/data into Will’s artificial heart. Lost in Space - Season 3Eps8
: To save Will, Robot seemingly sacrifices itself to reinforce Will's mechanical heart. : When SAR's weapon pierces the heart, Robot’s
Will Robinson, whose artificial heart is failing, travels to the robots' home planet with Dr. Smith and Robot. However, this was a calculated move: Robot had
: Penny Robinson finds a damaged robot trapped under wreckage and chooses to help it rather than destroy it. This act of mercy emancipates the robot—whom she names "Sally"—from its hostile programming.
With the war ended, the survivors begin building a permanent home on Alpha Centauri.
: Having found redemption through her actions, Dr. Smith finally turns herself in and delivers a full confession for her past crimes.