Hop Harrigan (also known as The Guardian Angel and Black Lamp) first appeared in All American Comics #1 created by Jon Blummer (Fighting Yank, Little Boy Blue) as one of the first successful aviation heroes in comic history (Hop appeared after Tailspin Tommy, Barney Baxter, Connie Kurridge and others). Hop Harrigan was technically not a true superhero (as he had no costume or special powers) though he did meet the Justice Society of America in All American Comics #8, and he did eventually become a superhero from All American Comics #25 (April 1941) to #28 (July) as the costumed Guardian Angel.