Bwa-ha-ha. It can be a bit like being a god, but not really. I invariably say oops! And I have even been known to apologize to characters when I try to force them into a box they do not want to go.
Some writers start with characters. I don’t. I tried that. I have a drawer full of fascinating character sketches… and nowhere to put them. All characters, some say, have their own story to tell. That may be true. I figure I may be deaf or all of these fascinating people I have found have dull stories.
I need to start with the story. I need a germ of a plot, some notion where I want to head (if not a glimpse of the possible end) and an interesting place and time for the story to get off the ground. Then the characters evolve. The people who find themselves in the midst of all those trials and tribulations work hard. They grow as the story progresses. They change and are changed in subtle ways as they work through situations and “live” the story. Sometimes even the end evolves as my characters take me to places I never imagined in the beginning.
I think that is what we want.
But that is just me. You may work wonderfully well starting with a fascinating person. Then again, you may get frustrated, find your writing likes to ramble, find yourself tearing out huge sections and whole chapters which sounded great when you wrote them but now don’t appear to help the story move where it might be heading, maybe. You may be frustrated that your characters are not cooperating and it makes you want to chuck the whole thing on the ever growing pile of unfinished works.
If starting with a great character works for you, great.
But, if you are more of the latter, try starting first with the story and see who fits. Isn’t that better than you having the fits?
Just a thought.