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This article is about a/an pre-series in the Power Rangers franchise.

Bio-Man was a television pilot for an American adaptation of the Super Sentai series, Choudenshi Bioman, produced by Haim Saban in 1986. Although it didn't result in a series, Saban would later successfully adapt the 16th installment of Super Sentai, Kyoryu Sentai Zyuranger in 1993, starting the Power Rangers franchise.

Though most claim that Bio-Man was a new Americanized dub, there are also claims that Bio-Man was an adaptation, much like Power Rangers. However, the reveal of a promotional folder for the show and photos of the five actors who weren't the actors from Choudenshi Bioman confirms that it would have been a Power Rangers-like adaptation.


Bio-Man is a "space adventure series" about five kids with identical "bio-rhythms" who defend Earth against Zadar's attacks, an evil half-human, half-robot villain who wants to conquer the world. [1]


Main article: Bio-Man (team)



Color Role Actor
Biorhythm Red Victor Lee Mark Dacascos
Biorhythm Green Zack Taylor Miguel Nunez
Biorhythm Blue Billy Cranston Tom Silardi
Biorhythm Yellow Trini Crystal Tricia Fisher
Biorhythm Pink Kimberly Harte Rebecca Staples




Actor Mark Dacascos lists and acknowledges his role as Victor Lee, the Red Ranger from Bio-Man. [2] Miguel Núñez Jr. also allegedly claims that he portrayed Zack Taylor but as a Green Ranger. [3]


  • One of the hurdles for Bio-Man was that the actor unions were in the middle of a dispute.
  • The pilot's title card shares the same font as the Bioman logo from the Techno Brace.
  • Footage from the pilot was reused in a promo Saban Brands made for Bandai in 1992 entitled Galaxy Rangers using Zyuranger footage instead of Bioman footage. It can currently be seen on bonus disk one of the MMPR boxset as a hidden easter egg.
  • Unlike its original counterpart, Bio-Man was an unaired program made by Saban, before starting Power Rangers in 1993.
  • Three out of the five main rangers were changed in the Saban Era for the official television program "Mighty Morphin Power Rangers".
  • Though the rangers of both Bio-Man and Choudenshi Bioman were referred to by color, Bio-Man's rangers included the prefix "Biorhythm", whereas Bioman's rangers appended a number instead, e.g. Red1.



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