In the beging of chatper 4 nick mentions 3 rumors about the mysterious Gatsby that his guests have passed at the party?

-I heard he killed a guy.

-I heard he's a German spy.

-No, he's not. He's a relative of the Kaiser.

-Everyone knows he's a bootlegger.

-He's a great war hero.

Clearly Fitzgerald wants to portray Gatsby as a mystery or an enigma.