Yeah, in the JoJ one can read about how unlike Sion, the initial attempt to revive the completely and utterly DEAD urgot failed, and incomes Dr. Pididly with his tech and stuff to bring him back to life. He isn't kept alive with the machines, they are just what brought him back to "life."
THE GIFT OF ETERNAL SUFFERING
Mostly dead and even then he's rotting away. It's only a matter of time before he would be a pile of flesh on metal legs...thus....Battlecast
TESTAMENT OUUUUT BOOOOOIIIIIIIIIII(...wtf was this)