Although a machine endowed with superhuman strength and futuristic weaponry, he often displayed human characteristics, such as laughter, sadness, and mockery, as well as singing and playing the guitar. With his major role often being to protect the youngest member of the crew, the Robot's catchphrases were ''It does not compute'' and ''Danger, Will Robinson!'', accompanied by flailing his arms.

does the robot from lost in space talk?
yes