It is known he was cut in half, but it kind of makes me wonder how he even survived for so long, considering it is shown that was cut almost up to his rib-cage, meaning he has half a stomach, and has not trying to sound funny, but has no genitals or anus, which would contaminate what's left of his body, and eventually kill him. Not only that, he survived for that many years, on a lower body of garbage, which should be totally unable to sustain his supposedly doomed body, and by feeding off of small rodents that entered his cave. Ok correct me if I'm mistaken, but where does the food he eat go, considering he has no lower body? By eating, and it not going anywhere, wouldn't it technically not only serve no purpose, but kill Maul since his body cannot even let it out? I just don't see any realistic way Maul could've survived that long, with that kind of injury, and baffling prosthetics. Darth Vader only lost his legs, not his entire lower body, so he could obviously survive.