Perpetual Motion Monster: Difference between revisions

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This is a type of monster that is immune to starvation and dehydration, it may not even [[The Insomniac|have to sleep]] or breathe. Much like the Energizer Bunny, it just keeps going and going and going. Perpetual Motion Monsters are either explicitly supernatural, a set super advanced [[Mecha-Mooks]], or [[Magitek|both.]]
 
Science savvy characters may [[Discussed Trope|discuss]] how implausible it is that the walking dead in a [[Zombie Apocalypse]], despite craving brains, can keep walking 24/7 for years or longer without any kind of sustenance. Compounded by that fact that though decayed they [[Sliding Scale of Undead Regeneration|never actually rot enough to stop posing a threat.]] Frequently, [[The Professor]] / [[Mad Scientist]] will fear (or marvel) at [[Just Think of the Potential|the potential]] these thermodynamic law breaking monsters represent. This is the whole idea behind undead armies in any setting-- theysetting—they are weak but fearless and while slow, they can march 24/7 with no supply lines, all while [[The Virus|assimilating the enemies' fallen]].
 
This is usually a [[Justified Trope]] for [[Our Ghosts Are Different|Ghosts]], [[Dem Bones]], and [[Elemental Embodiment|Elemental Embodiments]]s since they aren't really biologically based, so they don't need traditional food sources. Although, they may need some ''other'' form of energy or material as a [[Power Source]] [[Gods Need Prayer Badly|(like prayers]] or lighter fluid), thus [[Averted Trope|averting this trope.]] For [[Mecha-Mooks]] and other technology based creatures they usually incorporate some near infinite [[Power Source]] (or a means to tap into an external one) and some form of [[Regeneration]].
 
It's worth noting that a character with the right type of [[Immortality]] who eats and drinks can still be a Perpetual Motion Monster-- orMonster—or rather, a Perpetual Motion '''''Man.''''' Their form of immortality specifically preventing them from dying due to starvation and dehydration ([[Immortality Hurts|though they probably won't enjoy it]]). Such a character can make for a truly [[Implacable Man]]-- nothing—nothing can keep him from his goal, not even the ravages of time!
 
For extra threat, the Perpetual Motion Monster is also usually unaffected by dismemberment (except for the "annoyance" of a lost limb, though a [[Appendage Assimilation|needle and thread can solve that]]). For extra ''extra'' threat, it's also a [[Super-Persistent Predator]]; since being a Perpetual Motion Monster means it doesn't actually need to eat except for the pleasure of it, it can afford to go to the ends of the Earth in pursuit of that one tasty hero-sized morsel.
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* The [[In-Series Nickname|eponymous]] warriors in ''[[Claymore]]'' do not need to eat or drink except in small doses. Though, when they awaken, they eat human flesh regularly, but can go without for a long time (several years), but it does weaken them...
* The Angels in ''[[Neon Genesis Evangelion]]'' are explicitly stated to have an infinite power source in their bodies: the S2 Organ. Therefore, while alive, they have no need for sustenance, rest, etc. and are effectively immortal, though they can still be killed if damaged enough.
* The [[Our Titans Are Different|Titans]] from ''[[Shingeki no Kyojin]]''. While lack of sunlight and fatigue can slow them down, they do not age, sleep, or thirst and do not need the human flesh they eat .<ref>They lack digestive tracks beyond their stomachs and just regurgitate when full</ref>. They even regenerate biomass instantly and out of nowhere while thriving.
 
== [[Comics]] ==
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* In ''[[The Lord of the Rings]]'' there's the Watcher in the Water, a massive squid-like beast living in the pool of water just outside Moria. It had been driven from the deeps of Moria into the flooded valley as a guardian and to trap the dwarves inside Moria. A creature that big just hanging around in caves needs to have SOME of this going on though.
* In ''[[The Zombie Survival Guide]]'' zombies are explained by the virus which creates them replacing their mitochondria and taking over respiratory functions so they no longer need to eat or breath ([[Hand Wave|...somehow]]) and slightly more plausibly, delaying decomposition by protecting the body from rotting as the immune system would have. The later part of the trope is also averted, since zombies do rot away after a few years, unless they're in arid environments or end up being frozen.
* Not "monsters" per se, but ''[[Discworld]]'' [[Golem|Golems]]s just keep going and going and going and going. They're used for menial, tedious labor typically, since they don't have to sleep and, for the most part, enjoy it as much as they can enjoy anything. They even use this as a form of passive-aggressive protest via [[Literal Genie]]; they're smart enough to take initiative and can read the intent behind orders, but if you mistreat them, they're liable to fight back by doing ''exactly'' what you say, constantly, until someone figures it out and tells them to stop. This can mean that the golem you asked to "pump some water" doesn't stop until your shop's street is partly underwater.
** A more traditional version, also a golem, is Mr. Pump in ''[[Discworld/Going Postal|Going Postal]]''. As Moist's parole officer, it's explained that even though he can only walk while Moist can run, get a horse, or a cart, he will never tire, and never stop until he catches up to him. After one demonstration of this, Moist gives up on trying to run away.
* In ''[[John Carter of Mars|The Synthetic Men of Mars]]'', a malfunction at an already imperfectly working cloning facility produces a constantly growing mutant entity that consists of a huge blob of human flesh and random body parts. It's stated that [[It's the Only Way to Be Sure|if it hadn't been]] [[Kill It with Fire|fire-bombed]] from above until there was nothing left, it could have grown forever by ''eating itself''. Just think of the potential applications of something like that on a starving planet.
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