Like every major shonen series, One Piece has its own power system. There are two types of powers in One Piece—Haki and devil fruits. Haki is of three types—Armament, Observation, and Conqueror's Haki. Armament and Observation Haki can be awakened by a character if they train hard enough. However, Conqueror's Haki can only be used by characters who are innately born with it. Haki has advanced stages and a character who can use the advanced forms can become extremely strong. On the other hand, devil fruits are special fruits that grant their users special powers. Once a person eats a devil fruit, they gain a new power but lose their ability to swim. This makes the open sea or any other water body their biggest enemy. Like Haki, devil fruits are of three types— Zoan, Paramecia, and Logia.
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Paramecia-type devil fruits are the most common kind of devil fruits, and they grant their users the ability to change their bodies, affect their surroundings or create a specific substance. Some examples of paramecia-type devil fruits are: Ope Ope no Mi, Soru Soru no Mi, and Gura Gura no Mi. Logia-type devil fruits are the rarest types of devil fruits, and they allow their user to control a natural element. Without Haki, it is almost impossible to hit a character, who has eaten a logia-type devil fruit, and it makes them seem nigh invincible. Mera Mera no Mi, Hie Hie no Mi, and Magu Magu no Mi are a few examples of logia-type devil fruits. The final type is zoan-type devil fruits. These devil fruits let their user turn into certain animals. The users can either partially, or they can completely transform into animals. In addition to these two modes, zoan users can also morph
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