Guyver: Dark Hero (1994)

Revealing mistake: When running towards the "bear attack", Sean activates the Guyver. Close ups of the armor attaching itself to his body show that's not really Sean as his arm and leg are both seen not moving even though he's running to where the attack is occurring.

Character mistake: A character mentions carbon-dating one of the fossils found. This is preposterous... you can't carbon-date fossils like the ones being shown. Radiometric dating maybe... But certainly not carbon dating. He's a professional and should know more than better that carbon dating wouldn't work.

Continuity mistake: When Crane is melting at the end, watch his arm-blades... at one point they go from being perfectly normal, to floppy and "melty", then right back to normal between three cuts.

Trivia: Brian Simpson, who has three roles in this movie; Benny, Voker Zoanoid and Crane Zoanoid, also appeared in the first movie as a member of Craig's gang who attacks Sean.

Trivia: The first live-action "Guyver" movie had notably tame (often cartoonish) violence and a greater focus on broad comedy in comparison to the darker and gorier Manga and Anime franchise that inspired it, causing some backlash from fans. For the sequel, returning director Steve Wang made an effort to deliver a film tonally closer to the original source materials, and thus added in harsher violence, added significantly more blood to the fight scenes and removed many of the more comedic elements from the first film.

Trivia: Whereas traditionally many action-film series start out with R ratings and then later transition to PG-13 to broaden the appeal of sequels, this is one of the rare cases where a PG-13 original ("The Guyver") spawned a hard-R sequel made to appeal to the fanbase.

Sean Barker: The Guyver Unit. It's been a year since the alien armor invaded my body and became a part of me. A year since I first became the Guyver and destroyed the Chronos Corporation and their shape changing killers, the Zoanoids. Now Chronos is gone. But the Guyver stays in me. Calling me to fight. To kill.