When it comes to the Devil Fruits of the One Piece world, fans know that there are quite a few out there that are fascinating. Among all Devil Fruits, some are far more special and overpowered right from the get-go, and these are often the ones termed to be invincible. Among these Devil Fruits is the Mera Mera no Mi, a very powerful Logia Devil Fruit that was actually introduced long ago in One Piece.