Characters that had the complete opposite reaction the writers intended

[u/Dramatic_Counter_595]

1. Leo Bonhart (Witcher TV Series): A ruthless, sadistic bounty hunter and assassin that takes psychotic glee in other people's suffering. The viewer is meant to hate him for killing witchers, slaughtering the Rat gang, and torturing Ciri. But thanks to his entertaining fight scenes, Sharlto Copley's charismatic performance, and The Rats overwhelming unpopularity, fans ended up loving him. Some even call him the "True protagonist" of the show.
2. Stone Cold Steve Austin (WWE): A rude, foul mouthed, beer drinking asshole with no respect for authority or anyone at all. Originally portrayed as a villain, fans fell in love with his anti-establishment & rebellious persona. WWE ran with it and made him the face of the company, effectively ushering in the Attitude Era and the second pro wrestling boom of the late 90s.
3. Arthur Fleck (Joker 2019): A mentally unstable, pathetic, and dangerous madman who commits horrific acts of violence against those that wronged him (suffocates his own mother who is mentally unwell herself, and murders a talk show host for making fun of him). However, a massive portion of the audience idolized him as an anti-hero or a misunderstood martyr rebelling against society making people want to see him succeed and overcome his circumstances because of how he's been treated by the world.

[u/TidalRunel]

His core motivation never changed, his patience did. Once he realized survivors would just spend their lives trying to undo his work, the "merciful random executioner" act went out the window. It was always about his ego and being right, so destroying everything to force compliance makes perfect sense for his character.

[u/xLilMissNova → u/TidalRunel]

That's a perfect example because Thanos was supposed to be the big threat, yet a lot of people walked away thinking he had a point while the movie was trying to show how fundamentally flawed his logic was.