the good guys and the bad guys

So I'm watching a sci-fi flick with my kids and a new character appears on-screen. My son says, "Dad, is she a good guy or a bad guy?"

I could have replied, "Well, people are more complicated than those terms suggest, and good literature and cinema reflect that fact; they're more nuanced, and so that's a hard question..."

I could have added, "You should see all the fun debates on ELU about the use of 'guy' to refer to females!"

However, a) my son is five, and b) I was enjoying the movie too much.

So I said, through a mouthful of popcorn, which I continually advise my children against, "She's a good guy."

And that got me thinking: what other expressions can we use to talk about the cast of characters allied with the protagonist and the cast of characters allied with the antagonist? The only thing that came to mind was "white hats" and "black hats," which I assume come to us through cowboy movies. But surely that's not the only alternative.

I mean, our division of characters (and fictional worlds, not to mention the real one) into good guys and bad guys certainly predates these expressions, right?

Suggestions?

That's really interesting actually. For the record, I grew up thinking 'guys' meant something like 'people' <-- equally gender-neutral and referring to more than one person. I think I vaguely knew it also meant 'men'.

Anyway, the obvious ones have been mentioned but what about 'the A team' and 'the B team' for neutrality in terms of heroics? (Heroes / villains and goodies / baddies don't really fit when the protagonist is an anti-hero because then we'd have to say anti-villain or 'person doing the opposite of the main guy/person' and it all gets a bit silly).

Basically, whoever we're rooting for is the A team.

I deleted my old account, please only comment/vote for this answer (preferably up!)

That's really interesting actually. For the record, I grew up thinking 'guys' meant something like 'people' <-- equally gender-neutral and referring to more than one person. I think I vaguely knew it also meant 'men'.

Anyway, the obvious ones have been mentioned but what about 'the A team' and 'the B team' for neutrality in terms of heroics? (Heroes / villains and goodies / baddies don't really fit when the protagonist is an anti-hero because then we'd have to say anti-villain or 'person doing the opposite of the main guy/person' and it all gets a bit silly).

Basically, whoever we're rooting for is the A team.