In the first film, Sword of Vengeance Retsudo was portrayed by Tokio Oki.
Twelve minutes of footage from Sword of Vengeance was combined with most of the second film in the series, Lone Wolf and Cub: Baby Cart at the River Styx, to make Shogun Assassin, a 1980 film released as an English-language compilation for American audiences.
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In the final two films, Baby Cart in the Land of Demons and White Heaven and Hell, he is portrayed by Minoru Oki (with an eyepatch).
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: Series plans allow customers to rent entire television or film series in bulk; often in a single shipment, (i.e. Friends TV show or the Baby Cart film series) but otherwise work identically to Season Rental plans.
He took guest roles in many other television series, including Mifune's Kōya no Surōnin, the 1970s Lone Wolf and Cub TV series, and Suikoden.
The story is based on the manga Goyōkiba (御用牙) by Kazuo Koike, whose Lone Wolf and Cub manga was also adapted as a film series by Katsu, this time starring his brother, Tomisaburo Wakayama.
Jet Li played Hung Hei-gun in the 1994 film New Legend of Shaolin, which was loosely based on his life and mixed with elements from the Japanese series Lone Wolf and Cub.
# Lone Wolf and Cub: Baby Cart at the River Styx (Kozure Ōkami: Sanzu no kawa no ubaguruma, 1972)
The titular story of Volume 2 of Kazuo Koike & Goseki Kojima's manga comic Lone Wolf and Cub revolves around Linji's saying "if you meet a buddha, kill the buddha," in which the protagonist must overcome his self to assassinate a living buddha.
In the final two films, Baby Cart in the Land of Demons and White Heaven and Hell, he was portrayed by Minoru Ohki (wearing an eyepatch).
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The film has also been released as Shogun Assassin 3: Slashing Blades of Carnage, the second sequel to Shogun Assassin.
Yoshiyuki Kuroda directed the final entry in the six-film series, Lone Wolf and Cub: White Heaven in Hell.
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Ohki portrays the eyepatch-wearing Retsudo in the final two installments, Baby Cart in the Land of Demons and White Heaven and Hell.
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The character returns in the fourth film, Baby Cart in Peril, and is played by Tatsuo Endo.
The film has also been released under the name Shogun Assassin 2: Lightning Swords of Death, as a sequel to Shogun Assassin, which was most of the second film, Lone Wolf and Cub: Baby Cart at the River Styx and some of the first film, Lone Wolf and Cub: Sword of Vengeance edited together for the US market.