Something terrible happens that makes the hero get mad for a long time.
The hero progressively gets mad at everything and everyone while following a dark path.
This dark path corrupts them and brings out the evil version of themselves (inverted colors of their appearance is optional, but it usually contrasts from their normal appearance).
The evil version of the hero goes out to cause chaos in the place they live in.
The hero's friends realize that the evil-doer is the hero causing the rampage and try to stop them without really hurting them.
The friends try to persuade the evil hero to snap out of it, but it doesn't work as the evil hero is still fighting their friends.
Once they injure their friends severely, the hero realizes what they have done and try to fight the evil within them.
Once the friends see the hero fighting the evil version of themselves in their mind, they encourage and motivate him to keep fighting, bring up past moments that they shared with them.
The love interest helps out and confesses their love to the hero (optional).
The hero gains strength from their friend's words and defeats the evil version of themselves in their mind.
The hero returns back to normal as everyone is relieved that it's all over.
They go off to celebrate their victory as the credits roll.
Yes, this was all taken from one simple but decent looking image.
Ceejaythe630th
This is the average good guy gone bad story:
Something terrible happens that makes the hero get mad for a long time.
The hero progressively gets mad at everything and everyone while following a dark path.
This dark path corrupts them and brings out the evil version of themselves (inverted colors of their appearance is optional, but it usually contrasts from their normal appearance).
The evil version of the hero goes out to cause chaos in the place they live in.
The hero's friends realize that the evil-doer is the hero causing the rampage and try to stop them without really hurting them.
The friends try to persuade the evil hero to snap out of it, but it doesn't work as the evil hero is still fighting their friends.
Once they injure their friends severely, the hero realizes what they have done and try to fight the evil within them.
Once the friends see the hero fighting the evil version of themselves in their mind, they encourage and motivate him to keep fighting, bring up past moments that they shared with them.
The love interest helps out and confesses their love to the hero (optional).
The hero gains strength from their friend's words and defeats the evil version of themselves in their mind.
The hero returns back to normal as everyone is relieved that it's all over.
They go off to celebrate their victory as the credits roll.
Yes, this was all taken from one simple but decent looking image.