Violence Jack (バイオレンスジャック, Baiorensu Jakku) is a Japanese manga written and illustrated by Go Nagai and first serialized from July 22, 1973 to September 29, 1974 in Weekly Shōnen Magazine, published by Kodansha.[1][2][3] The second ran in Monthly Shōnen Magazine, also published by Kodansha, from January 1977 to December 1978, with a few gaps between months.[2][4][5] This two serializations of Kodansha were originally published in 7 volumes.
Five years later, the serialization continued this time in the magazine Weekly Manga Goraku, published by Nihonbungeisha, and ran from August 5, 1983 to March 23, 1990.[2][6][7] This serialization originally produced 31 volumes in total.
In November 1, 1993, three years later after the end of the previous serialization, a special tankōbon called Violence Jack: Mao Korin Hen (バイオレンスジャック 魔王降臨編, baiorensu jakku maō kōrin hen) was released by Nihonbungeisha.[2][8][9] Seven years later, in December 10, 2001 a special one-shot story, Violence Jack: Sengoku Majinden (バイオレンスジャック 戦国魔人伝, baiorensu jakku sengoku majinden), was published by Shueisha in a special edition of Weekly Young Jump, Bessatsu Young Jump #14.[2][10][11] This story has not been re-printed or compiled yet.
In May 2005 (cover date 2005-05-13·20) the magazine Weekly Comic Bunch published by Coamix, the most recent serialization started, with Shin Violence Jack (新バイオレンスジャック, shin baiorensu jakku).[2][11][12] This serialization was irregularly published, stopping in August 19, 2005 and restarting in November 2, 2007 to end in April 11, 2008 in number 17 of Weekly Comic Bunch.[12][13][14] It was compiled in tankōbon by Media Factory in 2010.
In the February 2021 issue of Kodansha's Monthly Young Magazine, it was announced that a new manga series written by Yū Kinutani, titled Violence Jack 20XX, would begin serialization on February 19, 2021.[15] As of September 20th, 2022, Violence Jack 20XX has been compiled into three tankōbon volumes.