After learning that Joseph has Royalty in his blood, Joseph designs & creates a special add-on to his Heavenmatrix: The Knight Attack Changer! When attached to his main watch, he can not only Transform/Henshin into his forms, but this new add-on can enhance his aliens into a special power up called Knight Attack Mode which ALL aliens can use!
And That's not all! He can also Henshin into a new form called Kamen Rider Knight!