Batman: The Ultimate Evil write about Thailand, he created a fictional country named Udon Khai which had many similarities with Thailand — though Udon Khai is described as being dominated by a lone kingpin who controls the country's one-industry economy based on sex tourism while Thailand's tourism economy, which includes sex tourism, is part of an economic development strategy enabled by international development agencies. Vachss deviated from Batman canon by having the Wayne family butler, Alfred Pennyworth, reveal to Bruce Wayne that his mother, Martha, was a sociologist who was secretly investigating a child pornography ring. In Vachss' novel, the Waynes were not the
Batman: The Animated Series as the Mad Hatter, David Warner as Ra's al Ghul, Michael York as Count Vertigo, Kate Mulgrew as Red Claw, George Murdock as and George Dzundza as the Ventriloquist. One of the series' best-known inventions is the Joker's assistant, Harley Quinn, who became so popular that DC Comics later added her to mainstream Batman comic book continuity. The Penguin underwent change for the series; his appearance was remodeled after the version seen in "Batman Returns", which was in production simultaneously with the series' first season. New life was also given to lesser-known characters for the series such as the Clock