Amid worries that AI will one day outstrip human intelligence and lead to our downfall, a Japanese technology has decided to fit a robot with a deadly katana sword, yay!

It posted a video of the robotic arm showing off its deft skill with a blade, which it learnt by motion capturing Japanese swordsman Isao Machii.

The robot takes on Machii in a number of challenges, performing complicated angled cuts and managing to slice with such speed and precision that it can easily halve a runner bean lengthways.

While he might not be able to match the robot, as humans go Machii is pretty swift, having recently sliced a fried shrimp fired at him at 80mph.