I'm six prompts and six days behind on my sketches...

I have started murderbot diaries and murderbot/SecUnit has grown a lot, and/or Martha Wells has learned a lot about him in the course of write the series for half a dozen years.

That's been my experience. Characters are people in my head and I don't know anyone very well, even my characters, even in my head...

Frank Costigan and Ranger Marianne Boyle spring to mind. Frank has come a long way from a two dimensional character to someone with a little self awareness, becoming a husband and father. Marianne is a ranger's ranger, it's her religion, like Shinto perhaps. One of the twelve precepts is know yourself to know your duty; know your duty to know yourself. You aren't a Human or an Oddity, a Markov or a Trike. You are a Ranger, and someone, somewhere, as Frank put it, has their ass deep in a crack and needs you to come save them.