The Psycho Cyborgs, with Samppa Von Cyborg is one of the most bizarre group of people and entertainers I've ever seen. They take things to the absolute limit in their so-called performance, and everything you see is done.
Included with their act are electric currents, needles, screw and hooks, among other things, and it's as weird and strange as it sounds, as you can see from the photos, which are tame in comparison to some of the others you can see here.
Evidently the goal of the group is to recreate the feel of a brutal slasher film, giving it a look or reality to the audience.
People have quit the troupe because of the actual pain needed to endure their hard core tricks.