Oh god, 4 of my favorite kamen rider.. no more kanmusu will be in risk of sunk again..

But all of them are the same person

Seika said:

But all of them are the same person

Is that a problem?

Roborider alone can wipe out most of the Abyss. You have to remember that his gun has infinite range, always hit it's targets and can pierce through and kill anything.

Hell, RX don't even have to leave his Admiral seat. Just sit there and pull the trigger through the window. End of war.