The Mato Mato no Mi is a Paramecia-type Devil Fruit that makes the user capable of aiming at whichever "target" he decides upon from any location and at any time with anything at ease. It was eaten by Vander Decken IX.
- Mato (的?) means "mark" or "target" in Japanese.
- In the Viz Manga and FUNimation adaptations, it is called the Mark-Mark Fruit.
Strengths and Weaknesses
This fruit makes the user capable of aiming at whoever they touch with their hands. After the user's hand is imprinted with the memory of the target, the user is able to target the person from any location and at any time with anything at ease, regardless whether or not they are aware of the target's actual location. Even if the targets move away from their current locations, the thrown objects will keep aiming at them, immediately changing their trajectory in order to chase targets around.
Furthermore, as shown with Noah, the user does not even need to actually throw the object for it to fly towards the target. All Decken had to do was touch the giant ship with a memorized hand and the ship itself rose off the sea bed without any assistance, aimed towards Shirahoshi.
With the distance and acceleration of the projectile the user is sending it is a very dangerous ability for it can actually provide greater force in its attack, as shown by Decken when he sent an axe towards princess Shirahoshi, where its acceleration gives a greater force to the axe blow, a blow that could actually be fatal. Apparently, the longer the distance between the user and the user's target the greater the resulting momentum of the projectile thrown. Even a person as strong as Luffy stated that the force behind the axe Decken threw was quite powerful. Also if the target the user has chosen happens to be anywhere near them, the thrown projectile will actually even swerve back in a manner not unlike to a boomerang coming back to its thrower. Furthermore, while the user is affected by the sea water, the objects used to target the recipient(s) can travel underwater, without the sea affecting or decreasing the intended function. Though any object can be thrown as projectiles, whether inanimate or living beings, this power cannot mark inanimate objects as targets, as Decken used his hands to mark his targets, only for that hand to touch the projectile he intends to throw without changing the mark.
While this ability is capable of sending objects to the target, it does not give the user the capability of controlling the direction or trajectory of the item, it will just follow a path to the target, moving past every thing along the way. Despite this, the thrown object is not guaranteed to hit even particularly fatally; even at point blank range, a knife thrown at Shirahoshi only hit her in the shoulder. Also, despite the incredible force of the thrown projectiles, they can still be blocked by obstacles or people of sufficient strength, in which the effect of the fruit will be nullified, and the item reverts back to being stationary. It will not act completely like a homing device, and as admitted by Decken himself, there are ways to protect one's self from his power. This is shown when an axe Decken threw stopped following its target, in this case Princess Shirahoshi, after Luffy blocked it. Hody has taken advantage of the fire-and-forget concept of his projectiles and used Decken himself to block the path of a thrown axe.
The Mato Mato no Mi user can also memorize as many targets with as many hands as he has (in Decken's case, two). However, in order to keep being able to target a certain person, the user must keep the hand that touched them from physically touching anyone else. Reasonably, owing to the fact that Decken must "mark" the target by touching them with his hands, he can be heavily disadvantaged in long-range combat against someone whom he had never marked before. Outside of combat, the power can serve as a sort of homing device to find the target's location. Vander Decken IX used this idea to find Shirahoshi when he realized she was not in the tower. He threw a large piece of coral and then jumped on it, riding it to Shirahoshi's location. When a target person dies, the ability of throwing is removed, which was how Decken became aware that Shirahoshi was still alive in spite of the repetitive projectiles that he kept sending at her, all of which were successfully deflected by Luffy.
Another weaknesses is that the user must not fall unconscious or die while an object is following its target, or the effect is cancelled. This was first seen when Decken fell unconscious and Noah stopped chasing Shirahoshi, sinking back to Fish-Man Island.
Decken had been using this fruit's power to launch projectiles at Shirahoshi from great distances, in order to threaten her for marriage, and even aiming to take her life. This was the reason why the princess was locked up in the Hard-Shell Tower for a decade, to block off all incoming projectiles. Due to Decken keeping his right hand memorized with Shirahoshi's touch, he can only use his left hand to memorize other targets. Shirahoshi, not knowing about Devil Fruits, referred Decken's power to be a "curse" named Mato Mato, a statement that Decken also tells others.
- This Devil Fruit marks the first time a Devil Fruit was consumed by a fish-man in the current storyline, and the first Paramecia fruit to make a debut after the timeskip.
- Like Bartholomew Kuma, Decken has to wear gloves to control some of the effects of his Devil Fruit. Also, like Kuma's Nikyu Nikyu no Mi, the hands of the user play a crucial role in implementing this fruit's power. It even follows the theme where the user can send objects and people away.
- This Devil Fruit is the second occasion in which one was mistaken to be a curse, the first being the three fruits consumed by the Gorgon Sisters.
- Similar to Bentham's Mane Mane no Mi, this fruit also follows a "memorizing" theme that the user must initiate with the use of their hands. Unlike Bentham's power, however, either hand can be used for the same ability, whereas with Bentham's power, each hand is used for different abilities.
- This fruit is also similar to Shiki's Fuwa Fuwa no Mi, as they both allow the users to levitate objects by simply touching them.
- Track & Trace - A Wikipedia article on the device that is similar to Decken's ability.