Robot (Lost in Space, 2018)

Origin (in the 2018 series)
A mysterious robot of a ship that supposedly crashed on the same planet that human several escape pods from colony ship the Resolute crashed on. The robot was damaged, split in half, by the crash however still functional. It encountered Will Robinson and attempted to attack him, however was unable to as its torso was impaled in a tree limb whilst its lower part was wandering below. Though initially hostile to Will, the two formed a friendship after Will reunited its halves in order to save it and himself from a forest fire. Later it followed Will to his family crash sight where it used its power to free Judy Robinson who was trapped in the ice. The Robot revealed little of itself, as it was unable to remember any previous recollection before meeting Will.

As the Robinsons met up with more survivors from the Jupiters, they decided to keep the Robot a secret. However the Robot existence was revealed to the rest of the colonists after it was called by Will to protect the encampment from two hostile predators. The colonists were wary of the entity, despite the reassurances from Will and its father. However after one colonist revealed that it recognized the machine to be the reason why the Resolute was evacuate as it supposedly attack the ship.

With no other choice, as it self-mandated mission was to protect Will, the Robot decided to commit suicide over a cliff to protect Will from itself. The Robot's remains were later scavenged by June Harris aka Dr. Smith and manipulates it to serve her, playing on its insecurities of being abandoned. Will's mother Maureen Robinson who had been kidnapped by Dr. Smith was forced to investigate the machine's craft and discovered that the technology used for the Resolute's interstellar drive was eerily similar. She came to the realization years before the colony expedition, a celestial object the Christmas Star crashed on Earth, and pieced together that object was actually as ship. She postulated that after the Chistmas Star's impact threatened the planet, the human governments stole the ship's techology to build the Resolute to preserve its species. The Robot 's attack on the colonists was not unprovoked, as it was merely sent to recover its creator's stole property.