A year has passed since Sean Barker became the host of the bio-boosting armor unit, the guyver, and destroyed the Chronos Corporation headquarters. Driven to find out more about the unit because it's compulsion to fight and kill threats has lead to him moonlighting as a very lethal superhero, Sean finds out the dreams he's been having match up to finds of a recent archaeological dig. It turns out supposed werewolf and monster sightings near said dig show him the Kronos corporation and their zoanoid shocktroopers aren't as destroyed as he thought they were.
Written by Nathan Long with Steve Wang serving as director and producer, Guyver: Dark Hero is an adaptation of the Japanese manga, Guyver, by Takaya Yoshiki. A sequel to the 1991 American live action film, Guyver, there is no costarring of Mark Hamill this time; but the final product is widely considered a much better result despite a lower budget. This is thanks to much less Executive Meddling than last time, allowing Wang and company to keep the tone consistent note . Replacing Jack Armstrong from the last film, David Hayter stars as Sean Barker.
Provides examples of:
- Ancient Astronauts: Mentioned in the first time with their ship seen here, they're responsible for making the first zoanoids and guyver units.
- Bloodier and Gorier: Than the first movie big time! Part of the whole reason the film was made as to emulate this part of the manga.
- Catch and Return: variant. After blocking a few bullets with his palms, the Guyver deflects and ricochets one back at the source.
- Elimination Catchphrase: Crane bothers to loudly yell, "You're fired!" before fighting Marcus.
- Hybrid Monster: Crane uses a guyver unit bonded to him in human form while transformed into his zoanoid body to become a "Guyver Zoanoid".
- Immune to Bullets: Pistol and rifle fire bounces off zoanoid hide, meaning the guyver, another zoanoid, or an obscene amount of electricity are the only things that can hurt them.
- Mythology Gag: Crane's Guyver Zoanoid armor has the same color scheme and spiky motif as Guyver III with Guyver II's damaged control metal.
- Off with His Head!: Sean decapitates one Zoanoid and blow up another one's head with dynamite.
- R-Rated Opening: Dark Hero, makes it clear within minutes that it earns its R rating, with some strong language, talk of cocaine smuggling, and two bloody deaths.
- The Remnant: Chronos in this film are largely acting in secret at least publicly, having their base destroyed by Sean last movie and being embroiled in a secret conflict with the US government.
- Shout-Out: The fight between the Guyver and the sword wielding drug runner resembles a fight in Batman (1989).
- Token Heroic Orc: Dr. Marcus goes against Chronos, despite being a zoanoid, especially after they kidnap his daughter.