When I think of agency I picture Werner Herzog's brother Lucki. When they ran out of money while filming Fitzcaralldo, Lucki, stuck in Lima, gets a car and goes locking for expensive houses to see if he can find someone he can convince to sign a check for a few 100k before sunrise.

This feels profoundly agentic because 1) what they are trying to do springs from a profound inner vision (they want to pull a steam ship over a mountain in the Amazon) and 2) he just won't take no for an answer.