Face it

When I'm writing a scenario for publication (such as this one) I'll sometimes cast the incidental NPC roles by saying which actor might play them. It's a shorthand way of conveying the idea of the character without having to describe their personality in the scenario.

My wife goes one further. When writing her novels she picks real faces that she can visualize as the characters. That could work when designing roleplaying scenarios too.

And a further evolution: Unreal Person lets you generate faces that don't exist. (The one above on the right really shouldn't.) Or you can use something like Nightcafe for non-modern images like this medieval apothecary:

You do have to let the art lead you where it will, though. There's not yet much hope of getting the AI to draw exactly what you want, as my experiments on the Mirabilis blog show. Still, the field of generative AI has reached escape velocity now. It's only a matter of time.