!@#$% Doomsday device!
It looks like something out of Metroid Prime.
As for what happens when you go into a black hole, it is simply a flat, swirling space of intense gravity which gives you the illusion it is a hole. It is impossible to have a hole in space since space is nothing but space. It is either flat or a a box-type thing, but obviously formless. When you go in one, you die. That's it. Although there are such things as white holes, and perhaps the energy in a black hole is so great, you are converted to dark matter or dark energy, or maybe just energy. Being a dark human would kick ass though. I imagine you would basically be like a Space Pirate controlled by the Ing, except you aren't controlled by anything. Back to white holes, though- perhaps when a black hole dies it turns into a white hole and begins to emit all the matter back out again- reversing its own space-time back to regularity (as it is shown space-time is not existent in a black hole by the diagram of what would happen if you used an anti-gravity device in a black hole), thus reversing exactly everything that was sucked in- so you could expect it to be more like time travel if you went into one, since you would be spat out billions of years later into space- where you would probably be killed by the super-fast emissions of the white hole. You probably wouldn't be killed by the endless vacuum of space as you would need a ship to reach the black hole anyway.
If you did survive, you would probably be in the Mushroom Kingdom, with Mario long dead (unfortunate timing I know), but now ruled by Mother Brain or something. Ending up on Tallon IV would kick so much ass though.
