Logia

Logia is one of the three Devil Fruit types. It is characterized by giving its user the ability to turn into a natural element or force of nature. Logia Devil Fruits are considered the most powerful as well as the rarest of the Devil Fruit types overall (not including the Zoan subclass, Mythical Zoan). The term Logia was first used when Laki heard about Enel's Devil Fruit abilities.

Strengths
Logia Devil Fruits allow a person to create, control, and transform into a natural element or force of nature, depending on the fruit. The user can transform partly, or completely.

A Logia user can be shattered, split, or otherwise separated into multiple parts, sometimes down to the size of dust, and reform without injury. The only known exception to this aspect. Another trait was displayed with this ability to recover from physical damage. Displaying that parts of a cut Logia's body can even act in a fragmented state.

In addition to their ability to become their element, Logia users can generate limitless amounts of their element and control it at their whim, giving them fearsome attack abilities. However, certain elements, such as Smoke and Swamp, are more suitable for capturing enemies rather than causing raw destruction.

Logia users can also use their element in other ways related to their element: Crocodile's sand power could be used to absorb moisture, Enel's electrical heat could melt and reshape metal, Logia fruits can afford the users immunity to effects related to their elements as well. For example, Crocodile and Ace are completely unaffected by the desert heat, as they possess Logia abilities related to aridity and heat, respectively.

Certain Logia users can also control their respective elements that are not generated from their own bodies, but are already preexisting within the environment. They can accomplish so by utilizing their own element from their own body and add it with the preexisting source, augmenting their already powerful force to higher and more versatile levels. However, none of the Logia users shown so far can manipulate their respective elements if it is in another state of matter or energy.

Finally, Logia users' physical strengths do not influence the power of the fruit. Regardless of the original strength of the user, their gained powers are of the same scale. This is different from Zoan fruits, which act as physical strength multipliers, and Paramecia fruits, which can be used in conjunction with the user's physical abilities. However, the properties of the Devil Fruit element can provide certain instances where the user can exploit it in conjunction with their own fighting moves.

Weaknesses
{{cquote|'Logia' who think they're invincible have short lifespans.|Pekoms, after defeating Caribou Despite the fearsome power of Logia users, they are far from truly being invincible. Sneak attacks are more likely to work, as the user will not be ready to avoid them. However, with training, most Logia users learn to transform by reflex, eliminating the ability to strike them by conventional means. For example, Enel's ability has been trained to the point that he could reflexively change form while partially asleep using Mantra to predict his enemy's actions.

Inexperienced Logia users also tend to become seemingly overconfident, as they are unaccustomed to physically dodging attacks or receiving attacks, due to their powers. Thus, if their advantage is neutralized by some means, they then have to rely on their physical ability to dodge, a skill which they may or may not be proficient at. This is somewhat mitigated by the fact that most Logia users shown thus far are extremely tough, even when they are vulnerable. However, for users who solely rely on their so-called invincibility while having little natural defensive power.

Another way to harm a Logia is to exploit the element itself, using its properties to solidify the user and rendering them vulnerable to damage. For example, Enel, being made of electricity, is vulnerable to Luffy's rubber body despite his honed reflexes, since rubber is an insulator. Another example is Crocodile, who, being made of sand, can be struck if his body is dampened (either by getting him wet or striking with wet limbs), since sand sticks together if wet.

In addition to solidifying the user's body, it is possible to use elemental weaknesses to a further extreme, completely neutralizing the element that makes up the user's body. Even though a Logia user can generate near-limitless amounts of their element, they cannot recover from blows that damage their physical body, no matter what state it's in.

Users of Busoshoku Haki can strike Logia users as if they were human; It is described that, as the ability to "force into solidity the fluid bodies of the near-invincible Logia Fruit users" when he explains it. When Haki is applied to a Logia user while they are intangible, rather than nullifying the powers completely; it turns the user back to their physical form. It also allows the one using Haki to grab the person in their transformed state as if they were tangible. It also was demonstrated that Logia users should not transform into their element against people more proficient in the use of Haki than them, since the increased body volume also increases the area where the Logia user can be attacked.

This is not infallible, however, as both Aokiji and Akainu (Haki users themselves) have both been hit by Haki-enhanced attacks that should have injured them, but have reformed them back to normal. Akainu does mention that it is annoying to fight Haki users, suggesting that he took significant effort to resist it. There is also the matter of simply dodging Haki-imbued attacks; physical contact is required to harm a Logia user, which means that as long as the Logia user performs long-range, indirect attacks, they can remain perfectly invulnerable.

It also seems that immense terror can disturb the regeneration progress. When Monet was cut in half by Zoro, knowing that he can use Haki, she was so terrified that she could have died if Zoro had used Haki. As a result, she had trouble reforming her body for a few seconds.

Finally, Logia users suffer the same weakness to the sea and Kairoseki as with other Devil Fruit users, forcing them back into their original form and sealing their powers. So far though, apart from Smoker, most Logia users seem to be able to avoid contact with the sea by either flying over the water or freezing it.

Other Information
Logia Devil Fruits are immensely powerful and one of the rarest types of Devil Fruit. The only type of Devil Fruit that are said to be rarer are the Mythical classes of Zoans.

These Devil Fruits are not limited to the classical elements: fire, water, earth, and air, but also include physical states like smoke and sand. There are two types of elements: tangible (something a person could hold and touch like sand or ice) and intangible (something that could not be held like smoke or fire). Logia Devil Fruits can also be divided into two other types, forms of matter (smoke, sand, ice, lava, swamp, gas or snow) and forms of energy (electricity, fire, or light). The only known Logia that does not fit into the latter method of categorization is Blackbeard's darkness. It appears that Logia users transformed with bodies made from intangible elements such as light can still be pushed (as demonstrated when an explosion blasted Kizaru).