It's implied a guy is completley naked. Nothing is seen however.

Mostly stylized violence as the guyver beats up monsters with aikido and other martial arts moves. A head-crushing in the opening. Other not-too-gory moments such as a monster getting cut open, another getting a sawblade in the head, and a third exploding.

Note: The VHS version is gorier, showing such scenes as more blood in the opening head-crushing scene, the guyver ripping the arm off a snake zoinoid, then snapping its neck with blood splatter, and blood squirting when the guyver kills the female zoinoid.

"Shit" is said 3 times. There's also "hells", "damns", and minor insults (idiot, etc).

Nothing.

Not very intense at all; in fact much of the film is quite comical aside from a few minor truly serious scenes.

Some children might be scared by the Zoinoids.