[ He's not as invisible as he's been trying to be. In fact, all it takes are a couple smarts to realize he wasn't normal. Either that, or to see the weird cracks in his arm or see him punch through metal or something dumb like that.

But right now, he was just a scruffy Asian in scruffy biker clothing talking about Kamen Riders. ]

Thjey are an old myth in some places, a fable in others. Maybe they were masked riders in the age before motorcycles, who later gave birth to the ones we hear about today. Maybe they aren't. Who knows for sure?