[Galvantula]

While a helmetless fight would be cool we do have to keep in mind the actor's safety. Skulls only work for so long and yes I do know that there are parts with the actors doing stunts, like Gaku's flip into Jinba Lemon.

It's just that things can go wrong very fast when you least expect it too and is it stated that Kamen Riders have to keep the helmet on as a general rule unless it's a exception like the G guys from Agito?

There's doing cool things and having them go well......and then there are accidents that could have been avoided with some foresight.