The Boston Celtics are a team deeply rooted in history, with some of the games most iconic names. Bob Cousy, Bill Russell, Sam Jones, John Havlicek, Larry Bird, Paul Pierce along with countless others have all, at one point, been the cornerstone of the organization.
With this current core of the C's, there isn't one player that sticks out as the "guy". Maybe the real alpha dog for this team is the gentleman wearing the suit on the sidelines, coach Brad Stevens.
But for the sake of answering the question at hand, let's go with the men that actually run up and down the court.