Johnny is a meek bespectacled teenager often taunted as a "sissy boy" by his high school peers who transforms into an adult "Avenger of Wrong" whenever he becomes angry and cries out at any display of injustice (""Eee-ow!""), changing back once he has finished beating up the bad guys, grows tired and yawns (making him a sort of cross between Captain Marvel and the Hulk). While some stories have him aware of his alter-ego, others indicate that he either doesn't retain the memory of anything he did while transformed or perceives them as only a dream.