Model Z, the Red Mega Man, is a Biometal from the Mega Man ZX series. It contains the essence of Zero. This Biometal grants the user an Z-Saber capable of a Charged Attack, along with the Double Megamerge to fuse with other Biometals.
Biometal Model Z is a black and red Biometal shaped after a hexagon. The front resembles Zero's helmet from the Mega Man Zero series. The chin has a long white ridge running down the bottom, reminiscent of the Z-Saber's hilt.  
Model Z retains Zero's personality.