The hidden Zeta Altman is very rare in Altman's works, and the probability is only one in a thousand, so it is difficult to draw it. The shape is unique, the pen is black, and the nib is Zeta Altman's head. Pressing the pen tip will make Zeta Altman transform. The hidden Zeta Motorized Ultraman Pen is expensive in the market, and it is the rarest Motorized Ultraman Pen.