Villains championing the mottos "survival of the fittest", "being weak is sin" and "might is right" which are bases for kratocracies; they differ slightly from Totalitarians and Supremacists. As a matter of fact they do not always value races and/or nations but individual strengths seeking to create societies or worlds in which only the most ruthless individuals exist to raise later generations.

Social Darwinists are not always intentionally villainous; some genuinely believe their philosophies are good, even if they are delusional and vile by nature. However, applications of such philosophies often lead to the formations and rise of fascists or Anarchists which people must fight to survive amongst.

As mentioned above, the Social Darwinist is often confused with the Supremacist, but they are different concepts. The Supremacist is often racist while the Darwinist is not and merely believes that the ancient rule of "only the strong survive" is just. There are even some scientists (fictional and real) who try to support the theory that humans should abandon the "weak" in favor of the strong, resulting in Abusers and Misanthropes. Often, Social Darwinism leads to the villain's downfall, as they may be occupied with infighting rather than getting rid of the protagonist.

There is a distinct and obscure subtype in recent culture equal to Harbingers for Rebirth and Nihilists believing in measures such as population control thinking they must "balance out" everything by removing overpopulation or similar problems so new orders can be set.