If commercial use is allowed by the resource(s) you're ok. If they ain't, you ain't.

The examples JeniferC mentioned are specific to scenery resources, where there are sometimes quite specific restrictions to prevent someone effectively re-selling somebody else's hard work.

Example, you make a scene with Victoria (any flavour), Mike (likewise), a car and a house, set in an environment featuring various scene elements and a sky. On the face of it, that's ok. If, however, Victoria is Wonder Woman, Mike is Batman and the car is the Batmobile, you can't do it because DC will jump on you for unauthorized use of their characters. Most organizations - Disney being a notable exception - will turn a blind eye to (which is entirely different from explicitly allowing) fan art but tend to get a tad upset when people other than themselves make money from their characters and creations. Disney, as noted, tend to go stark raving batshit at any and all unauthorized use of their stuff, whatever the reason, when and wherever they are. Any that are still out there are because their legal team hasn't found them yet.

Coppula eam se non posit acceptera jocularum.

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