'''Basic Trope:''' A villain who believes in [[MightMakesRight Survival of the Fittest]].
* '''Straight''': Bob, an [[AmbitionIsEvil ambitious]] and [[CorruptCorporateExecutive selfish Capitalist]], believes that natural selection means the strong should rule and profit [[KillThePoor at the expense of the weak]].
* '''Exaggerated''': Bob, a [[ANaziByAnyOtherName racist]] [[EvilOverlord tyrannical]] EvilutionaryBiologist, desires to wipe out those with even the slightest sign of weakness and become the "[[TheUbermensch ]][[TransHuman berm]][[UltimateLifeForm ensch]]" [[TheUnfettered through any means]], even if it means causing the [[TheEndOfTheWorldAsWeKnowIt Apocalypse]].
* '''Downplayed''': Bob isn't a sociopath who takes matters into his own hands, but supports legalizing Euthanasia and promotes birth control not out of compassion but because of "population control" and "for the good of society as a whole".
* '''Justified''':
** Bob lived (or [[FreudianExcuse grew up]]) in a [[CrapsackWorld dog-eat-dog environment]] [[StartOfDarkness which warped his philosophy]]. In this world Bob needed to fight hard to get what he wanted, which means that he's a SelfMadeMan, but the shady game he was forced to play in order to reach his [[AmbitionIsEvil ambition has made him sour and cynical]].
** [[LensmanArmsRace Competition drives innovation, and humans have invented a lot of technologies just so that they can survive and kill their opponents]]. Take away competition and the Arms Race, and humans become lazy.
* '''Inverted''': A [[WellIntentionedExtremist villain wants to preserve the poor and the weak]] while it is the heroes who subscribe to Survival of the Fittest.
* '''Subverted''':
** Bob constantly talks about how stronger groups survive and weaker groups dissolve, but reveals that he isn't talking about warmongering dog-eat-dog-ism, but the benefits of [[ThePowerOfFriendship friendship and mutual cooperation]].
** Bob looks like a Social Darwinist on the outside, but is eventually revealed to have in secret a genetically-disordered IllGirl sister, [[PetTheDog and Bob loves said Ill Girl even more than his very own life]]. The reason why he behaves like a Social Darwinist is because it's a CrapsackWorld and [[KnightTemplarBigBrother he had to be ruthless in order to create for his sister a nice, healthy world to live in]].
* '''Double Subverted''':
** But he still acts like a Social Darwinist around people because he's a bit of a jerk, and he can.
** Bob eventually goes HeWhoFightsMonsters, and eventually dominates and [[KickTheDog tortures]] said IllGirl, reducing her into a mere pet and plaything, because in his eyes she's too weak and pathetic to be even considered worthy of being human.
* '''Parodied''': Bob brings up a lengthy BreakingLecture about Survival of the Fittest, even giving the equivalent of an entire class in Evolutionary Biology and the ideology of Nazi Germany, [[HarmlessVillain only to justify]] [[PokeThePoodle stealing candies from babies]].
* '''Zig Zagged''': Bob knows natural selection is a fact, but is repulsed by it, but then recommends that we should gain more power and the weak should be "euthanized".....
* '''Averted''': There are no references to evolution around.
* '''Enforced''': Author includes Darwin [[TheWarOnStraw only to prove or disprove his points]].
* '''Lampshaded''': "Survival of the fittest, really? [[YouFailBiologyForever You Fail Darwin Forever!]]"
* '''Invoked''':
** A [[CorruptChurch religious conspiracy]] sets up a Social Darwinist extremist to discredit natural selection through GuiltByAssociation.
** {{God|IsEvil}} or a group of AbusivePrecursors made nature such a strength-favoring CrapsackWorld as an experiment.
* '''Exploited''': A ManipulativeBastard uses the Social Darwinist fad to recruit henchmen (particularly the fit and confident ones) for his purposes.
* '''Defied''':
** Bob, an evolutionary biologist who continuously writes about natural selection and survival of the fittest, gets accused as a Social Darwinist, but rejects the implication and encourages [[AllLovingHero altruism]].
** Real-life evolutionary biologists are actually obsessed with maintaining biodiversity and preserving endangered species that, according to Social Darwinists, are supposed to be wiped out by Nature's Law.
* '''Discussed''': "Why does it have to be that the strong should dominate the weak?"
* '''Conversed''': "Social Darwinists. I hate these guys." "Why?" "First and foremost: Darwin does not work that way. They just give him a bad name."
* '''Deconstructed''':
** Bob's social Darwinist policies cripples his faction's abilities to preform essential functions aside from making war, and possibly the ability to do that as well.
** After losing many battles, Bob begins to see himself as inherently pathetic, weak and unworthy to his tastes, and is DrivenToSuicide.
** Bob's repulsive Social Darwinist behavior drives away everyone, and thus is even more prone to being wiped out of the gene pool, since in Real Life cooperation is more advantageous for long-term survival than individual strength.
** The reason why Bob is a social darwinist is because he really had to fight[=/=]struggle hard to get what he wanted, which means that he's a SelfMadeMan, but the shady game he was forced to play in order to reach his goals, and the hardships he faced through his struggle, has made him sour and cynical of the world in general.
** Bob only uses social darwinism as an excuse to be a jerk and treat others like shit, and he really doesn't believe in the whole "hard work, strength and intelligence = success and life fulfillment" part of the social darwinist ideology. He only got what he wanted by fooling, luring and using other people who actually should be in charge due to their creativity or hard work, and making life difficult for those who saw through his bullshit.
* '''Reconstructed''':
** After losing many battles, Bob begins to see himself as inherently pathetic, weak and unworthy to his tastes, but instead of being DrivenToSuicide, he responds with "I should improve myself anyway."
** Bob does realize that in real life cooperation is more important than individual strength, making him decide that being a ManipulativeBastard would have greater benefits.
* '''Played For Drama''': Bob is proven to be a hypocrite, condemning everyone else as unfit to survive while making constant excuses for his own weaknesses.
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Back to TheSocialDarwinist, if you are fit enough.
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%% Optional items, added after Conversed, at your discretion:
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%%* '''Implied''': ???
%%* '''Plotted A Good Waste''': ???
%%* '''Played For Laughs''': ???