Mera Mera no Mi's power to produce flames is incredibly destructive & hot, making it one of the most dangerous Devil Fruits.

Together with the unique abilities of his awakening, which are more akin to Paramecia-types than Zoan, this confirms that Luffy's awakened devil fruit form is absolutely unique in the series.

They are also the first devil fruit users who showcased awakening powers, and their true form is still unknown. People have always mistaken them to be regular beasts, but Crocodile pointed out ...

It is also possible that Saint Killingham is awakened, in which case, yet another transformation needs to be seen, as Devil Fruit Awakening offers a unique transformation to Zoans. The Kirin is a ...