Paramecia fruits are the most common of the Devil Fruits types. They can change the user's body in some way. For example, Luffy's Gomu Gomu no Mi allows him to stretch like rubber. The powers that paramecias are granted can't be generalized into one category. Some users can mentally activate their power (ex: Foxy) while others can alter their body (Miss Doublefinger).
Advantages: Grants the user the ability to do a trait that can be classified only as ''superhuman''
Disadvantages: Paramecia types are the easiest to fight against because while their powers give them an advantage, they also make them easy to be predicted by their opponents and their powers are only shown in a short amount of time when used once.