Adafruit Industries have outdone themselves with this. I suggest watching the entire video to see how it’s made, as it’s all quite impressive. I’m not saying I understand how it was made, but there was obviously a lot of tech and know-how that went into making this beauty. The head moves just as erratically as a Guardian in Breath of the Wild, but I don’t think they installed blue lasers of death... probably.
I particularly like the poses they give the robot at the end of the video, showing it looking at its fallen robot friends. It kinda makes you feel for the little guy, until it kills you, that is. I’d love to see a version of this that has functional legs that can move the Guardian around, as the ones in this one are just for show (and possibly killing). Who knows if that’s even possible, though. But if it is, I’d bet that Adafruit Industries would be the ones to pull it off.