This is a super-specific question, one that ideally I would have put in a simple Q-and-A thread if there was one, rather than giving it a thread of its own. How good of an idea is it to introduce a character by comparing them to another character....that isn't around or hasn't been introduced yet. I literally just started banging out some introductions today after forgetting about writing for a while. The intro I had in mind, and started writing, basically introduces an MC by contrasting them with someone else (whom the audience has not met, unless I actually ever write a prequel, but otherwise is described somewhat in following paragraphs. Again, only for contrast purposes though). Sorry if this is super-unclear. While introducing someone this way makes sense to me, who already has something of a "backstory" in mind, already knows about the characters being described, it doesn't seem too useful for the audience. So maybe it isn't the best idea.