Global, reusable. Shots reference these rather than copying them.
Free-form traits. These are folded into every prompt this character appears in.
Angles that hold for every version. Version-specific images live below and take priority when a shot selects that version.

The same character at a different age or state. A shot picks the character and then the version, so Elias at 7 and Elias at 16 stay one person.