Sigma Project
The Sigma Project used experimental technology which drew mental energy from the siblings themselves. This process put a tremendous strain on them, but gave the Sigma Project unprecedented power levels. They were forced to use the life threatening Sigma technology after Salamandes Dragon and Zylpheeza II incapacitated the rest of the mecha. They managed to destroy them with their knowledge of their mother's survival that created those aforementioned unprecented power levels. The Sigma Project seemingly does not transform, and is identical in design to the Max Victory Robo, except it is all black.