The Love Interest
Maybe this doesn’t apply to your novel – it doesn’t always have to – but it’s good to keep in mind.
Why should I root for this potential couple?
Again, I want you to repeat previous character creating exercises, but build them a little bit around the protagonist. Why does the protagonist like this person? How do they compliment each other?
On the opposite end of the spectrum, why would they be bad for each other?
How does their trauma affect how they choose romantic partners (if at all)?