Who is Mr. Banizon from The Pat Hobby Stories and what is their importance?

Mr. Banizon appears in Pat Hobby's Secret, where he is a studio producer with the a problem. Mr. Banizon has half a script finished, but he doesn't know the ending, and his writer is refusing to finish it for him. Pat sees a chance to make a quick buck and decides to help Mr. Banizon out. Before he can tell Mr. Banizon the end of the script and take advantage of the job Banizon has arranged for him, however, Pat forgets the story. Banizon was willing to pay Pat more than a third of the salary he was making in his heyday, and the money would have changed Pat's life. Unfortunately, Pat became so frightened of the man who killed the first writer that he forgot the one thing that would have changed his life.