What DC Comic book did the Joker originally appear in 1940?
The Joker (comic book) The Joker is a comic book series published by DC Comics starring the super-villain the Joker. It ran nine issues from May 1975 until October 1976.
Kobra (DC Comics) Kobra is the name used by two fictional supervillains published by DC Comics. The Jeffrey Burr Kobra and his brother Jason first appeared in "Kobra" #1 (February 1976), and were created by Jack Kirby. Jason Burr debuted as Kobra in "Faces of Evil: Kobra" #1 (March 2009) by Ivan Brandon and Julian Lopez.