Yeah all those mentioned have nothing on the Master of the world
Why was he life so bad? Well getting abducted by aliens and getting tortured for 30,000 years will do that to you
Exert:
"When the Plodex Ship captured Eshu it decided it wanted to learn all it could about the human race on any and every conceivable and inconceivable level imaginable. The Master went insane, fleeing the intolerable pain by plunging himself into the soft, warm womb of madness His bones were ground to paste—one bone at a time, one millimeter at a time over the course of months. His blood was intermingled with a variety of liquids to see the effects it would have on his circulatory system, such as tar. His eyelids were turned inside out, his eyes popped out of his sockets like escargots. His tongue was subjected to taste impressions across the analytical spectrum. His skin was pulled off and stretched out, sewn back on, cauterized, liquefied and forced to bear the sensation of needles pricking at its surface, fire at its core. All but his brain was not studied and became incorported being absorbed into the greater functions of the ship, becoming at first a tiny extension of the computer matrix. However, his will was strong, his sense of self indomitable, it took 30,000 but he purged himself of madness and took control of the ship. His brain came to control the unliving machines around it, and were able to comman them to reconstruct his mortal form, but a perfect form this time".