Lost in space was the best show I have ever watched. From the perspective of the robot he was at first angry because the humans stole his engine, but after Will Robinson saved him he became friendly. He first showed anger when the beast attacked the huge light and tried to eat Penny. This made everyone uncertain and nervous. It got worse when Angela tried to kill the robot. IN the end the robot was taken on the Resolute and forced to take the ship to alpha sentary. He fought this off because Will was not on the ship at the time. After he saved Will and the Robinsons got sucked into the vortex the SAR trapped him in a hole for 8 months. That must have been super boring. He then tried to take all the kids to alpha sentary but instead found Judy's father's ship. This was a definite twist in the series and the worst cliff hanger on the planet!!! Over all I think the robot is very protective of the things he loves, is quick to take orders, and can get very angry is something is taken from him or if something he loves is threatened.