[quote][i]"They say there's no Devil, Jim, but there is....
RIGHT OUT OF HELL!!!!
I SAW IT....!!!!!"[/i] - Starfleet Commodore Matt Decker of the USS Constellation NCC-1017, describing The Doomsday Machine.[/quote]
A very destructive and dangerous gigantic Mecha from the Star Trek franchise. It appears in Star Trek: The Original Series.
The Doomsday Machine is a very powerful and virtually unstoppable automated massive Alien Robot machine capable of destroying entire Planets using powerful pure anti-proton beams. The machine then uses the planetary debris and other remains as its main source of fuel, making it a self-sustaining robot weapon.
It resembles a giant mechanical Worm floating in space. Its main superstructure is made of pure neutronium, making it resilient to most forms of energy weaponry.