What protagonist characters are introduced in Chapter 6? What does their introduction represent?

In Allan's side of the quest, he not only agrees to befriend Julius and split the money with him, but also encounters Benny and the Beauty. All of these characters will be more fully fleshed out in the coming chapters, but their introduction in rapid succession creates a zany, anything-can-happen spirit in the book that is important to understand as key to the book's sense of humor.