David Endocrine

David Endochrine was a late night talk show host operating ten years after Batman retired. He has a sidekick named Hank who announces from a podium at the side the new guest with a brief description of them in a comical manner.

History
Shortly after Batman returned to crimefighting since his decades-long retirement, David Endochrine planned a new episode featuring the supposedly-reformed Joker after Dr. Bartholomew Wolper arranged to have him appear. The episode upon being announced was considered highly controversial. Upon announcing the Joker, and questioning him, the Joker managed to kill everyone, including Bartholomew Wolper and Endochrine himself, the former via a neck-snap and the latter via laughing gas from two of Joker's robotic drones Bobby and Mary. Besides the Joker, Endochrine also had sex scientist Dr. Ruth appear on the show, although Joker killed her via kissing her.

In other media
David Endochrine appeared in the film Batman: The Dark Knight Returns Part 2 where he played the same role as in the comic. However, a difference is that he only had Joker and Dr. Wolper on the set, as Joker's killing Dr. Ruth was cut from the film. He was voiced by Conan O'Brien in the film who is also a late-night talk show host.

Trivia

 * David Endochrine is a parody of the late night talk show host David Letterman, and in the comic was modeled after Letterman. In the film version, he was modeled after his voice actor.