Azula
Avatar: The Last Airbender · 2005
A fourteen-year-old prodigy who was raised as a weapon
Five seasons spent proving the excuse was never the reason
Editorial estimates on a 0–100 scale, calibrated against every other character in the index. Not official canon.
A chemistry teacher with terminal cancer starts cooking methamphetamine to provide for his family and ends up a drug lord who has poisoned a child and watched a woman die on his own decision. The show's structural achievement is that no single episode contains the moment he becomes the villain, and its final admission is that he did all of it because he liked being good at something.
He is smarter than the people he works for, and he will burn anyone who limits him.
Ego. Every catastrophic mistake he makes comes from refusing to be underestimated.
The show was pitched as turning a protagonist into an antagonist, and it delivered without a single episode where the change is obvious. That is a structural achievement nothing else on television has matched.
The tragedy is that the excuse was never the reason, and the show waits five seasons to let him admit it out loud.
Genuine chemistry expertise applied to problems it was never meant to solve. He improvises solutions under pressure that professionals cannot follow.
The hat and glasses became a costume within two years of broadcast, which almost never happens to a television character in a realistic setting.
Avatar: The Last Airbender · 2005
A fourteen-year-old prodigy who was raised as a weapon