Chandler Riggs who played Carl in the Walking Dead is one big example that I can think of.
I was never a big fan of the character or Riggs as an actor since he clearly needed lessons (something he also acknowledges), but even I know that his character was never supposed to be killed off. Even if the show made decisions that were separate from the comics, Carl and his story was too important to the overall plot of the series that killing him off was just unacceptable cause he was supposed to be the character that becomes the lead after Rick!
But the story behind the real reason he was killed off is more messed up, because it came down to the fact that the network didn’t want to pay Riggs more after he was at the age where he wouldn’t be paid the salary of a child actor anymore. Plus the showrunner was dishonest with Riggs, assuring him that he was safe from being killed off and when this decision was made it pissed off Riggs’ father especially.
Posted by phantom_avenger