Conversation so far:
who played the silver stormtrooper in the force awakens
Captain Phasma is a silver armored character in the film The Force Awakens portrayed by English actress Gwendoline Christie.
did Gwendoline Christie want to be in the film The Force Awakens
Gwendoline Christie fought heavily to appear in the film, continually insisting her agent get her a part in it.

Question: what had she been in before this
Self-contained rewrite: what had Gwendoline Christie been in before The Force Awakens