The set-pieces give me externals: a varied group of settings and action elements. But I want my stories to have internal value too. In particular, I want the main protagonist and other characters to go through significant changes, inside as well as outside.
There’s an element of risk here. I’m talking about the starting stages of the project. If I’ve done any writing at all at this point, it will just be playing around with possible voices and with viewpoint options (first person, third person, past tense, present tense, that sort of thing). Usually I like to establish such choices as part of the keel—at the very least, the keel has to specify whether the book will be told from a single person’s point of view or from multiple viewpoints. So I may write a few sample pages, but nothing cast in stone.
This means that I don’t really know the characters yet (unless I’m writing a sequel to a previous book, and even then, there are bound to be new characters who play substantial roles in the story). As a result, I have to be cautious when it comes to dictating how characters will change throughout the book.
I can only start by tentatively deciding a few traits about each character, but I recognize (a) that these traits may change, and (b) that they may fade in significance as new traits arise during the actual writing.
As an example, take Kim Lam from All Those Explosions Were Someone Else’s Fault. At the outset, I decided that Kim was a geology student and third-generation Chinese-Canadian. I also knew that Kim was withdrawn because of a high school relationship gone bad, and that her character arc throughout the book would be gradually tearing down the emotional walls she’s been hiding behind.
But I didn’t start out knowing that Kim was non-binary. When I first wrote the passage where she describes what kind of clothes she usually wears, I simply intended her standard outfit of overalls and a nondescript shirt to be an outgrowth of her emotional walls. She didn’t want to project any sexual image.
During the writing, that all changed. It surprised the heck out of me when Kim eventually came out as queer. I remember thinking, “Crap, am I really going to do this?” There are obvious risks when a cis-het white male writes a gender-queer Chinese person who started life as female. If I did a bad job, it would be awful.
Then again, I could feel the rightness of what I’d discovered. In the book, Kim talks about evolving into her non-binary identity: “I knew what didn’t work, but it took a while to find out what did.” That echoes what happened during the writing. But once I realized Kim had to be non-binary, that identity became such an essential part of the character that some traits devised while planning the book just faded into the background. (By the way, for those who care, Kim ends the book by taking new pronouns and shortening zir name to K.)
So before I begin a book, I decide on a few characters traits and provisional character arcs. But I expect those to change during the actual writing. I love when they change during writing. That means the characters are starting to come alive.