|Power Source||Atomic Energy|
Compared to its original counterpart Doublas M2 had a completely black colour scheme and its armour was much more rounded, lacking the horns and long snout.
The Doublas M2 was released alongside a massive horde of Mechanical Beasts on the Mazinger Z and Great Mazinger. It was destroyed by Mazinger Z's Rocket Punch. A design more closely similar to its original counterpart was used in the creation of the Garadoubla MK01.
- The version of Doublas was like Garada K7, based on his original concept art.