Count Duckula was produced by Filmation and appeared as part of their "Mighty Mouse" and "Heckle and Jeckle" cartoon hour. Count Duckula then reappeared in the 2015 TV Series of Danger Mouse. "Count Duckula" was created by British studio Cosgrove Hall Films as a spin-off from "Danger Mouse". In 1984 Nickelodeon acquired the US broadcast rights to "Danger Mouse", which became a hit for the channel. After a few years, the Nickelodeon management came to Cosgrove Hall wishing to co-produce a new series. After being shown a number of ideas, the then head of Nickelodeon, Geraldine Laybourne, spotted a picture of Count
Superman: The Animated Series off into a new animated series, "Justice League", which also featured other popular DC Comics characters, including Wonder Woman, The Flash, Green Lantern, Martian Manhunter, and Hawkgirl which spawned a sequel series "Justice League Unlimited". Originally producer Bruce Timm wanted the show to have a more 1940s Fleischer Studios "Superman"-cartoon feel. Another original character design sheet showed the characters in a stylised 1950s style (not unlike that of the live-action "Adventures of Superman" TV series), suggesting that the producers also considered setting the series during that period, or possibly ending up like "Batman: The Animated Series" (set during modern times,