What's the opposite of the pet the dog/save the cat trope?
I mean a moment early on that lets you know a character that's generally really moral and heroic isn't a complete goody two-shoes (as opposed to a moment that lets you know a villainous character isn't a complete and total ass). The example I'm thinking of is from a pretty obscure movie where it's implied early on the otherwise upstanding protagonist might have cheated a bit on his taxes.