Fan Casting Murderous Malfunctioning Machine in Sort by Tropes

Firstly, the big red switch on his back that flips between "Good" and "Evil"? Might want to be careful with that. Secondly, your Robot Buddy is not a toy! Well, OK, you did buy him at Bots'R'Us so he is a toy, but you should still treat him with kindness and care. Case in point: Turned Against Their Masters. Thirdly, try to keep your new mechanical friend healthy. A bad virus could be the death of you. Fourth and last, if you've purchased the "Defense Bot" upgrade that adds Telescoping Robot functionality and Death Rays, please refrain from abusing the robot's WarMode to beat up bullies.