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
Animated series and Ferb", "Gravity Falls", "Rugrats", "Hey Arnold!", "The Fairly OddParents" and "Steven Universe." Animated series shown in movie theatres include the "Tom and Jerry" animated cartoon short films that appeared in movie theaters from 1940 to 1967. Direct-to-video animated series include most Japanese original video animations (OVAs). The first OVA series (and also the first overall OVA) was "Dallos" (1983). Almost all hentai (pornographic) anime series are released as OVAs. Animated web series first appeared in the late 1990s, with the first internet animated cartoon series, "The Goddamn George Liquor Program" (1997–1998), followed by other early series that included "WhirlGirl",