Fallout 3 - Liberty Prime

Liberty Prime is a giant, military robot, that appears in the Fallout games. Liberty Prime fires dual, head-mounted energy beams, which are similar to shots fired from a Tesla cannon.

He first appears in Fallout 3 and also it's add-on Broken Steel. Then again in Fallout 4 and later in 2017 in Fallout: The Board Game.

1. Robot - A robot (also called a droid) is a machine - especially one programmable by a computer - capable of carrying out a complex series of actions automatically.