Meanwhile Max Gaines, formed the sister company All-American Publications around 1938. Detective Comics, Inc. soon launched a new anthology title, entitled "Action Comics". Issue#1, cover dated in June 1938, first featured characters such as Superman by Siegel and Shuster, Zatara by Fred Guardineer and Tex Thompson by Ken Finch and Bernard Baily. It is considered to be the first comic book to feature the new character archetype—soon known as "superheroes" and was a sales hit bringing to life a new age of comic books with the credit going to the first appearance of Superman both being featured on the cover and within the issue. It is now one of the most expensive and valuable comic book issues of all time. The issue's first featured tale which starred Superman was the first to feature an origin story of superheroes with the reveal of an unnamed planet later known as Krypton that he is said to be from. The issue also contained the first essential supporting character and one of the earliest essential female characters in comics with Lois Lane as Superman's first depicted romantic interest. The Green Hornet inspired character known as the Crimson Avenger by Jim Chamber was featured in "Detective Comics" No. 20 (October 1938). The character makes a distinction of being the first masked vigilante published by DC. An unnamed "office boy" retconned as Jimmy Olsen's first appearance was revealed in "Action Comics" #6's (November 1938) Superman story by Siegel and Shuster.