User blog comment:Lord Loss/Monster Hunter Frontier Season Forward 5/@comment-64.141.96.176-20121107000048/@comment-1011548-20121110101158

99% sure it's called a Supremacy monster, just like Supremacy Rathian, and soon Teostra and Dora as well.

And I think Odeibatorasu had a Supremacy form available as soon as Forward 5 was released, which is pretty weird.