What is a "Heroic Antagonist"?

Music to go with the Article

A Heroic Antagonist is a character who is an antagonist (that is, they oppose the protagonist), yet is still technically a hero. They oppose the main character and may not even have Sympathetic side, but their objectives are things like saving the world, saving large groups of people, heck, saving anybody's life if they have the chance. A tweaking of the narrative could easily make them a sympathetic protagonist. They would shudder at the thought of committing clearly evil acts.

Usually this character's main concern is that the protagonist, either intentionally or not, may bring up a scenario that would spell doom for the world or, depending on the scale of the narrative, a single person. How they come to this conclusion varies. They may be misinformed as to the nature of their enemy. They could also be completely correct in their assertions simply because the main character is a Villainous Protagonist. In any of these events, the Heroic Antagonist is able to keep their good alignment while still being the narrative's opposition.

Here is a Pol.................................Wait they aren't evil, OK it's just a line up then:

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I like all the examples that were provided. It really covered all the genreas of entertainment.

I cant think which one I liked the best. They all were good