|“||Your father... was seduced by the dark side of the force. He ceased to be Anakin Skywalker and became Darth Vader. When that happened, the good man who was your father was destroyed.||„|
|~ Obi-Wan Kenobi explaining Vader's origins.|
|“||You either die a hero, or you live long enough to see yourself become the villain.||„|
|~ Harvey Dent before his fall from grace.|
Many heroes walk a thin line between good and evil, indeed many heroes have fallen into despair, rage, or even madness, and once proud heroes descend further into the path of evil, often fighting against people they once protected or fought alongside. Originally protagonists or somewhat good guys, these villains turn evil due to events in their lives, such as being corrupted by another villain, their desire for revenge, a failed love relationship, or even betrayal from the good side to the dark side. A Hero turned to the Dark side is usually the end-result of a protagonist exposed to a Corrupting Influence, Brainwasher, and occasionally an Extortionist, Blackmailer, or even a Bond Destroyer.
There are various scenarios that involving why these individual are turned to the dark side, though the said individual often to fell onto multiple scenarios altogether:
- From Nobody to Nightmare: Scenario where the said individual turned to the dark side in this way often became a shocking events for either viewers, heroes, or other people that learned about this. Reason of this mainly because the said individual are used to be either harmless/helpless, looked down upon, his/her existence was ignored (like Max Dillon), and worse, considered as an outcast or an individual that often being abused by other people that dislikes/hate them, either the Big Bad or merely minor villains in the story. Once this individual turned to the dark side, they became feared by many people, includes heroes that facing them. Example of this is Koba.
- Not good with Rejection: The said individual may once, an aquitance/love interest of heroes that befriended them prior turned to the dark side. One day, the said individual either made an offer or confessing love to the said hero, in which both cases, the hero rejected it. The individual then unable to cope with this, and thus, decided turned to the dark side. The worse the hero reject the individual, more farther that individual turned to the dark side. Example of this is Syndrome, whom wishes to being the Incredible's partner, but The Incredible callously reject it, effectively pushed Syndrome into hellbent on genocide against superheroes until Parr family and Frozone are presumed last superheroes that still exist on earth.
EXTREMELY IMPORTANT : Tragic villains do NOT automatically mean that they are heroes turned to the dark side. This category is meant for villains who used to actively work for the good side.
This is also counted as "Face-Heel Turn."