Board Thread:Theories and Rumors/@comment-5336393-20180902201459/@comment-26921673-20190110022516

Whether or not he has the shape shifting powers of an Oni, the Dragons, or atleast some of them, had the power to shape shift via Form.

The FSM empowered normal humans with elements, turning them into elemental masters, therefore, all the elements he gave them, like Form, he had to start with.

Being the progeny of either the Firstbourne or all dragons in general, it's likely he had all secondary elements, and this further solidifies the fact that he was the one who empowered those choice humans. So in a nutshell, it's likely that he had shapeshifting powers, whether it be from Dragon or Oni.