Heartwarming / Lost in Space

Original Series

• After arguing all episode, John and Don's reconciliation at the end of "The Hungry Sea" was nice to see.
• Amazingly enough, Dr. Smith has had some of these in the series. A good example is near the ending of "All That Glitters" when he becomes genuinely horrified and heartbroken after his newly acquired Midas' touch causes Penny to turn into platinum. He even pleads to the gods, asking them to punish him instead of her. After this, she's brought back to normal. For those who know Dr. Smith, it's hard not to be moved by this demonstration that yes, he does have a heart.
  • Even as early in the series as the first season. Like in the episode "The Derelict", were Smith shows genuine concern for Will when he learns the boy snuck out of the ship at night. While he had already planned to "liquidate" the boy along with the rest of his family. It's interesting Smith's initial reaction upon realizing Will could run into the Robot, was one of concern.
  • Smith has quite a strong scene in "The Time Merchant" (as well as some VERY badly needed redemption) where he begs the Robot to stay with him on Earth. Likewise, Smith is devastated when he realizes the Robinsons will be killed if he doesn't board the J2.
• While also sad, the ending of "My Friend, Mr. Nobody". Wherein Penny's friend Mr. Nobody seems to Ascend to a Higher Plane of Existence.
• In "Invaders from the Fifth Dimension", Don shows a protectiveness in regard to Will. Openly warning Dr. Smith to leave the boy alone.
• In "Oasis", in spite of all the trouble he had put them all through. The Robinsons all expressing genuine concern for Dr. Smith after he runs off without a word. Sadly, the very next scene shows, Dr. Smith does not feel the same towards them.
• In "The Sky is Falling", Will and the little Tauron child quickly becoming friends.
• Will catching up with the self-exiled Dr. Smith in "Wish Upon a Star". Even bringing the man some food.
• Judy in "One of Our Dog's is Missing", volunteering to leave the ship in order to find Penny's missing pet dog.
• In "Return from Outer Space", Will explaining to Davey how the alien life he and his family had encountered out in space aren't so different from life on Earth. An extremely generous assessment, since many of the aliens the Robinsons had encountered up to that point had been hostile.
  • Davey helping Will escape his Aunt Clara and the Sheriff.
• During part two of "The Keeper", both Judy and Don, then later John and Maureen willingly considering offering themselves up to the Keeper. As substitutes for Will and Penny.
  • Maureen, upon finding the Keeper wounded after he had been attacked by one of his animals. Attempts to help him, despite he's previously threatening her own children. Something that surprises the Keeper himself.
  Keeper: After what I have done, you can still show kindness to me? You are indeed unusual creatures.
• In "Ghost in Space", oddly enough Dr. Smith has a moment when he tries to defend what he believes to be the spirit of his uncle, Thaddeus. When Don pulls out a laser, ready to try and fight the invisible force attacking the Robinsons camp.
  • Dr. Smith's reaction when Will reveals that he was alive and well, and not an angry spirit come to haunt him.
• "War of the Robots", the Robot's unusually hostile attitude towards the Robotoid appears to stem mostly from his desire to protect the Robinson family.
  • Despite his fears, the Robot insisting on staying by Will's side when the boy wants to continue his repair work on the Robotoid.
  Robot: Stop William Robinson, I will accompany you. You may need protection.
  Will: I'm big enough to take care of myself.
  Robot: True, but I am a little bigger.
  • When the Robotoid confronts the Robot, telling the Robot that the Robinsons don't need two robots to serve them and that he should leave. The Robot adamantly insists the Robinsons are his family and that he will not give them up.
• Near the beginning of "The Challenge", when the Robinsons first encounter the alien boy Quano. He quickly starts insulting Penny, simply for being a girl. Surprisingly, it's Dr. Smith who rather angrily calls the boy out on his blatant misogyny.
• In "The Space Primevals", Don and Dr. Smith are trapped in a cave running short of oxygen and with no hope of rescuing. After years of despising each other, they make amends and admit they consider each other as friends. This is also the only time in the series in which they refer to each other by their first names. Of course, the whole thing is mixed with Funny Moments due to them still Volleying Insults while making peace and Smith insisting that Don calls him Zachary rather than Zach, but none of this diminishes the scene's heartwarming qualities. If anything, it enhances it.
• Depending on the Writer, Dr. Smith and the Robot may be portrayed as genuine Vitriolic Best Buds and even be reduced to tears at the thought of never seeing each other again, such as in "Rocket to Earth". Conversely, other episodes show the Robot seemingly going away forever and Smith not giving a dang.
• The ending of "The Astral Traveler", where Hamish and Angus are finally freed from their ghostly torment and move on to the afterlife.
• Will saying goodbye to Dr. Smith in "The Space Croppers". After all the crap Smith's done, Will still want to be friends with him. Even better, the look on Dr. Smith's face after Will walks away shows he's really going to miss Will.
  • Similarly, when Will asks Dr. Smith to be his Parental Substitute when it seems they're stuck on Earth together in the season one episode "The Raft".

1998 Film Version

• After the Robot's personality had been tampered with. Will convincing Robot to fight Future!Smith's programing and help him and the others escape.
  • Heck, all the Will and Robot scenes are adorable, really.
  Robot: Robot will save Will Robinson. Robot will save his friend.
• Judy, using the ship's weapons as a signal flare so West and the others could find their way back.
• Penny trying to console Will over their father not paying attention to them shows that, despite her joking threats, she actually does care about her little brother.
• John saving Future!Will from falling to his death.
  Future!Will: You could have taken the core and left before it was too late.
  John: I couldn't let you fall; you're my boy.
• Future!Will forcing John into the time portal in order to save the others. Then his jubilation at the fact that the device actually worked.
  Future!Will: It worked!
  John: Come with us!
  Future!Will: ...I can't. Only enough power for one person, one trip, remember? Take care of 'em, Will...

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