Who is Frankie Breezy from The Mysteries of Pittsburgh and what is their importance?

Frankie Breezy is a mobster. He is meeting with Joe Bechstein when Cleveland and Art force their way in trying to get an audience with Joe Bechstein. Frankie has been feuding with Carl Punicki for years over territory, and when Art announces that Cleveland wants a job, Frankie gets extremely angry, not only because they have intruded on a private meeting, but because Cleveland is already one of his workers. His presence is important because it clarifies the fact that Cleveland and Art don't understand what they're getting into. Frankie finds Cleveland's actions insulting.