Sally is a minor character on Netflix's Lost in Space. She is an alien robot, who got helped by Penny Robinson.
Sally was one of many alien robots which attacked Alpha Centauri after penetrating the settlement's shields, hoping to claim the Alien Engine. During the battle, Sally became stuck on ship debris and was injured and disconnected from her legs. Penny Robinson spotted this and Judy Robinson motioned for her leave the robot, but Penny helped her instead. Upon being helped, the robot became friendly in a similar fashion to the Robot that Will Robinson had befriended, the lights on her face turning bright and yellow instead of the usual red. Penny named her Sally, stating that "Robot" was already taken and that she "looked like a Sally."
Vijay Dhar and Liam Tufeld were both surprised by Sally's transformation and when they asked what she did, she replied simply "I helped her." Sally's transformation helped the other members of the colony to see that Will's bond with the Robot was not a one-off thing and that peace could be made with them. Soon after this peace was broken, Sally left the colony, having been freed of her programming and able to make her own choices.