Profile in the Human Design System is the costume that we wear. Each one of us fits this costume perfectly in the way we behave and live out our lives. It is a major component in coming to understand how we are designed.
Richard Beaumont describes the 5.1 Profile using original graphics to represent it's qualities and a stream of keynotes that appear in sequence with his descriptions. Clint Eastwood is the celebrity that he uses as an example of the Profile.
This video is lasts 39:41 minutes and contains a superb graphical representation of all the 6 Lines to provide a taste of the framework involved in the Profiles.