'''Basic Trope''': A story of how the villain [[FaceHeelTurn became evil]] in the first place.
* '''Straight''': Alex sees his girlfriend, Betty, get killed and becomes a murderer to avenge her death.
* '''Exaggerated''': Alex is forced to kill Betty, the only person who cares about his existence, and as a result, goes on a rampage around the world.
* '''Downplayed''': Alex's girlfriend Betty dies of an incurable disease. This made Alex not a murderer, but an unpleasant and callous {{Jerkass}}.
* '''Justified''':
** [[RousseauWasRight No one is born evil, after all.]] Something had to [[MoralEventHorizon change]] Alex into a villain.
** Alternately, Alex, who originally had [[WellIntentionedExtremist good]] or [[PunchClockVillain neutral]] intentions, has been working for the BigBad for so long that he lost all of his original morals and descended into a state of apathy toward his work, allowing him to do things which he once would never have considered without a twinge of guilt or remorse.
* '''Inverted''':
** The story is about Alex, a CardCarryingVillain who spends his days [[PokeThePoodle poking poodles]] and [[KickTheDog kicking dogs]], and [[HeelFaceTurn discovers]] that he is GoodAllAlong.
** Alice saves Alex, a CardCarryingVillain, who from then on steadily acts more morally thanks to Alice's kindness. Eventually becoming one of the good guys.
** We see a FlashBack or the BackStory of Alex that's meant to show why he became TheHero in the first place and his ascent into goodness.
* '''Subverted''':
** Alex is [[PerspectiveFlip telling the story himself]], and he [[UnreliableNarrator isn't exactly being honest.]]
** Alex sees his girlfriend get killed and kills the murderer, witnessing how horrible it is to be evil and swears to [[ThouShaltNotKill never kill again]].
* '''Double Subverted''':
** However, he is in fact [[VillainsNeverLie telling the truth]]... [[ProtagonistCenteredMorality as he sees it, of course.]]
** Because he despises evil so much, Alex [[KnightTemplar decides that killing may be a viable way to prevent more killing]], backtracks on his personal oath and gets used to committing atrocities.
* '''Parodied''':
** Alex, upon capturing TheHero, reveals [[ShaggyFrogStory a ridiculously nonsensical backstory]] [[TheUnreveal that doesn't really explain anything]] about Alex or [[FaceHeelTurn how he became evil]].
** It is revealed that Alex decided to become evil after learning [[FelonyMisdemeanor someone ate the last Tasty Snack in the fridge]].
* '''Zig Zagged''': Alex tells TheHero that the reason that he became a psychopath is to avenge the death of Betty, [[LoveMakesYouEvil who he loved.]] However, TheHero later learns that Bob [[ILied lied]] about his FreudianExcuse. He recaptures Alex and is told a completely different story altogether.
* '''Averted''':
** The reason why Alex is evil or amoral is never revealed.
** Alex had a normal background. He became evil for simple reasons, like [[{{Greed}} wanting money.]]
* '''Enforced''': "We really ought to explain why Alex does what he does. Otherwise he'll just look like just another CardCarryingVillain."
* '''Lampshaded''': "You don't know why I'm this way, do you? This looks like a good time for me to tell you my tragic and unhappy backstory."
* '''Invoked''': "All right, Alex, tell us what made you the slime you are!"
* '''Exploited''': AmoralAttorney Dewey uses Alex's backstory to create sympathy in the jury at the murder trial.
* '''Defied''': Alex outright refuses to explain his StartOfDarkness, with the rationalisation that it doesn't change the fact that he's a villain now.
* '''Discussed''': "Why is Alex evil, anyway? [[FreudianExcuse Childhood trauma?]] [[LoveMakesYouEvil The tragic death of a loved one?]] ParentalAbandonment? [[RaisedByOrcs His upbringing?]] [[ForTheEvulz Just because he could?]]"
* '''Conversed''': "What made Alex so utterly heartless?" "[[FreudianExcuse Bad parenting.]]"
* '''Deconstructed''': Alex's reasons for becoming evil, although true, are not the reason he became evil - he was a JerkAss long before Betty was killed.
* '''Reconstructed''': However, Betty was Alex's MoralityChain and, with her dead, Alex has crossed the MoralEventHorizon.
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Return to StartOfDarkness... And be sure to watch the path...
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%% Optional items, added after Conversed, at your discretion:
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%%* '''Implied''': ???
%%* '''Plotted A Good Waste''': ???
%%* '''Played For Laughs''': ???
%%* '''Played For Drama''': ???