Bob Kane his first adventure strip, "Rusty and his Pals". In early 1939, DC's success with the seminal superhero Superman in "Action Comics" prompted editors to scramble for more such heroes. In response, Bob Kane conceived "the Bat-Man." Kane said his influences for the character included actor Douglas Fairbanks' film portrayal of the swashbuckler Zorro; Leonardo da Vinci's diagram of the ornithopter, a flying machine with huge bat-like wings; and the 1930 film "The Bat Whispers", based on Mary Rinehart's mystery novel "The Circular Staircase" (1908). Bill Finger joined Bob Kane's nascent studio in 1938. An aspiring writer and part-time shoe salesperson,
Modern Age of Comic Books in comic books. This also led to an avalanche of other comic book adaptations which included previously lesser known Vertigo titles, notably "Constantine" (based on the comic book "Hellblazer") and "V for Vendetta". In the mid-1970s, Marvel antiheroes such as the X-Men’s Wolverine, the Punisher, and writer/artist Frank Miller’s darker version of Daredevil challenged the previous model of the superhero as a cheerful humanitarian. Miller also created Elektra, who straddled the conventional boundary between love interest and villain. Two artistically influential DC Comics limited series contributed to the trend: "," also by Frank Miller and "Watchmen" by Alan Moore and