[Black Fang]

I'm a little confused. Grease's Robot suit design is from him using the Robot Gel with the Sclash Driver. Presumably if he used the Robot Bottle with the Build Driver and some adapter (like the Cross-Z Dragon or Magma Knuckle), that version of Grease would be like Build's PhoenixRobo, but with both halves being robot-based (Similar to Cross-Z "Mark I"). Cross-Z Charge didn't look anything like the Build Driver Cross-Z suits.

This form is using a new bottle and the Build Driver, but still has the Sclash Driver Grease's design. At least with Cross-Magma, there's some connection between Magma and Dragon via fire; how are robots and blizzards related? This version of Grease should at least have Build's Robo helmet or something similar rather than the Sclash Driver helmet.