Question: Which was released first, The Haunted World of El Superbeasto or Munto?

Context articles: Munto
List of Munto episodes
Lynne Naylor
Hercules vs. Vampires
Reg Park
Hercules the Avenger
Game (2016 film)
Hercules in the Haunted World
The Haunted World of El Superbeasto
Hard to Explain

Munto is a two-episode original video animation (OVA) project by Kyoto Animation, first released in 2003 titled "Munto" followed by a 2005 sequel "Munto: Beyond the Walls of Time".
 An animated television series entitled "Sora o Miageru Shōjo no Hitomi ni Utsuru Sekai" based on the OVAs was produced by Kyoto Animation and directed by Yoshiji Kigami.
 The TV series is a nine-episode continuation of the OVAs, and aired in Japan between January and March 2009 on Chiba TV.
 The TV series includes an updated director's cut of the OVA episodes with new animation and footage.
 A manga adaptation of the TV series illustrated by Makoto 2-gō began serialization in the May 2009 issue of Kadokawa Shoten's "Comp Ace" magazine.
 An animated film named "Tenjōbito to Akutobito Saigo no Tatakai" (天上人とアクト人 最後の戦い ) was released on April 18, 2009.
"Munto" is a Japanese original video animation (OVA) series containing two episodes that were released on March 18, 2003 and April 23, 2005.
 The episodes were directed by Yoshiji Kigami and were produced by Kyoto Animation.
 While the first episodes is entitled simply "Munto", the second episodes is titled "Munto 2: Beyond the Walls of Time".
 The OVAs were licensed by Central Park Media in North America and are distributed by U.S. Manga Corps.
Lynne Naylor (born in Vancouver, British Columbia on November 7, 1953) is a Canadian, award-winning designer, animator, artist, director, producer, and icon for television.
 She is best known for co-finding Spümcø alongside John Kricfalusi, Bob Camp, and Jim Smith as well as co-developing "The Ren & Stimpy Show" for Nickelodeon.
 Other best-known pieces of work she took part in was "Monsters vs. Aliens", "The Haunted World of El Superbeasto", & "".
Hercules vs. Vampires is an opera by composer Patrick Morganelli.
 The work is written as a companion piece to the 1961 film "Hercules in the Haunted World".
 The work integrates the 1961 film by projecting the film in its entirety behind the action on stage.
 However, the sound of the original film is replaced with Morganelli's music.
 The performers on stage sing the lines of the 1961 film screenplay by Mario Bava, Sandro Continenza, Franco Prosperi, and Duccio Tessari in synch with the projected film.
 Commissioned by the Opera Theater Oregon, the work had its world premiere in Portland in March 2010.
 In April 2015 the work was staged by the Los Angeles Opera.
 In October of 2017, the opera will be staged at the Arizona Opera.
Roy "Reg" Park (7 June 1928 – 22 November 2007) was an English bodybuilder, businessman, and actor.
 His first title was Mr Britain in 1946.
 He then won the Mr Universe in 1951, 1958 and 1965.
 He also starred in five films, four featured as Hercules and in one, "Hercules in the Haunted World" (1961), he co-starred with Christopher Lee.
 Besides his own career and titles, he is probably best known as an idol and mentor to Arnold Schwarzenegger.
Hercules the Avenger (La sfida dei giganti / "Challenge of the Giants") is a 1965 Italian adventure film directed by Maurizio Lucidi.
 It was composed mostly of re-edited stock footage from Reg Park's two 1961 Hercules films, "Hercules at the Conquest of Atlantis" and "Hercules in the Haunted World".
Game in Kannada, Oru Melliya Kodu (English: A thin line) in Tamil, is a 2016 Indian bilingual language crime thriller film directed by A. M. R. Ramesh.
 This movie is an unofficial remake of the 2012 Spanish thriller El Cuerpo (Spanish title) also known as "The Body", and features Arjun Sarja, Shaam and Manisha Koirala in the lead roles.
 With music composed by Ilayaraaja, the film was simultaneously shot in Kannada and Tamil; the former released first on February 26, 2016 while the later released on July 1, 2016.
 The film was dubbed and released in Telugu as "Notuku Potu" in 2017.
Hercules in the Haunted World (Italian: Ercole al centro della terra) is a 1961 Italian sword-and-sandal film directed by Mario Bava.
 British bodybuilder Reg Park plays Hercules while British actor Christopher Lee appears as Hercules' nemesis Lico.
 Shooting at Cinecittà, director Mario Bava used some of the same sets from the earlier "Hercules and the Conquest of Atlantis" which had already starred Reg Park.
The Haunted World of El Superbeasto is a 2009 American adult animated exploitation musical black comedy horror film directed, co-written and co-produced by Rob Zombie.
 The film was written by Zombie and Tom Papa from Zombie's comic book series of the same name.
 The film was produced by Starz Media and Film Roman, with animation provided by Carbunkle Cartoons and Big Star Productions.
"Hard to Explain" is the first single from New York garage rock band The Strokes (their only previously released material was "The Modern Age" EP).
 It was released first in the UK and was later released in the US with different album artwork.
 (The UK version has a photo of two chairs, one red and one black, facing the camera.
 The chairs appear to be in a diner or restaurant of some sort.)
 Because this single is the first from their debut LP "Is This It", "Hard to Explain" made the anticipation for the album proper very high, and when "Is This It" did come out it was widely hailed as one of the best of the year.
 The B-side of this single, "New York City Cops" was omitted from the US version of the album in the wake of the September 11 attacks on the World Trade Center (the chorus to the song contains the lines "New York City cops/They ain't too smart").