Unconventional Abilities

Ok ,so we know the main three powers in one piece are:
-Devil Fruits
-Haki
-Fighting Style(swords or hand-to-hand)
But there are also some strange abilities that doesn't seem to stem from any of the above mentioned abilities(of course they could be considered"fighting styles").
I will choose to focus on 2 primary abilities:
-Fire related abilities

I will start with the man that we all know and love:Sanji
We got and "explanation" on...

Unconventional Abilities