Kinnikuman Nisei has been published in Shueisha's Weekly Playboy since 1998. It also inspired an alternate universe retelling of the series, aimed primarily at children, called: Kinnikuman Nisei ~All Out Assault~ (2002-2007).
It is published in two parts, with part one being 28 volumes and part two being 29 volumes (2004-2011). The first part covers events between the Hercules Factory Arc and Demon Seed Arc, and part two covers the Ultimate Chojin Tag Tournament Arc.
A group of Devil Chojin calling themselves the d.M.p attack Earth. The Justice Chojin try to stop them, but - due to their old age - they do not stand a chance against the younger and more vigorous fighters. They decide to reopen the Hercules Factory and train a new group of Justice Chojin, who will challenge the d.M.p.
List of Arcs
- Hercules Factory Arc
- D.M.p Arc
- Fire of Inner Strength Challenge Arc
- Chojin Olympics: The Resurrection Arc
- Demon Seed Arc
- Ultimate Chojin Tag Tournament
List of Chapters
- Main Article: List of Kinnikuman II Sei (Ultimate Muscle) chapters
- Main Article: List of Kinnikuman Nisei characters
- Kinnikuman Nisei (1998 - 2004)
- Kinnikuman Nisei ~All Chojin Dai Shingeki~ (2002-07, Alternate Retelling)
- Kinnikuman Nisei: Part Two: Ultimate Chojin Tag Arc (2004~11, Special Story Arc)
- Ultimate Muscle (2002-2004, English Dub)
- Kinnikuman Nisei (2002, TV Anime)
- Kinnikuman Nisei: Ultimate Muscle (2004, TV Anime)
- Kinnikuman Nisei: Ultimate Muscle 2 (2006, TV Anime)
- Dream Tag Match (2002)
- New Generation vs. Legends (2002)
- Path of the Justice Chojin (2002)
- The Holy Chojin History (2003)