Brad Dexter
From superman.nu: Supermanica
Brad Dexter
An alternate identity employed by Superman when he dons a false moustache and obtains employment as a reporter on a Chicago newspaper in order to escape the effects of an alien cowardice ray, beamed at him from outer space by members of the Superman Revenge Squad, that transforms him into a spineless jellyfish whenever he appears in his Clark Kent identity (Act No. 322/1, Mar 1965: "The Coward of Steel!").