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The final boss for Monster Hunter Portable 3rd. It spends most of the time airborne, and is capable of unleashing devastating beams of concentrated wind and water. It seems to possess the ability to manipulate storms and wind, as it is surrounded by a hurricane wherever it goes. It has been sighted above the Mountain Peaks, attacking an airship manned by a Hunter and his comrades.

In battle, Amatsumatgatsuchi hovers above the ground. Its movements are reminiscent of fighting the Leviathans underwater in Monster Hunter Tri, and many of its attacks are similar to those used by them such as the charge, tail whip, and roar animations. It also has a wind barrier around its body, unlike Kushala Daora's wind barrier, it doesn't cause the hunter or attacks to be deflected. However, Ballista shots will be somewhat less effective as long as the barrier remains active. The barrier is also less stable than Daora's, as it temporarily disappears when Amatsumagatsuchi uses certain attacks.

When angered, Amatsumagatsuchi's eyes begin to glow, and when it's damaged enough, it will enter a second state of rage: its horns will shine in a golden glow and the whole body will be covered with purple markings as the storm around it intensifies (the second part of the theme will begin playing as well). This second state of rage means that Amatsumagatsuchi will become far more aggressive and use its most powerful attacks, but unlike White Fatalis and its armor mode, its head will take more damage instead of less (the defense of all of its other parts remains the same).

One of its most dangerous attacks is when it creates a small twister that begins to suck in the hunter, then hits them hard with a tornado-shrouded charge. Even if the first main twister is avoided, he will revolve around the second twister, encompassing a wider area with every revolution. If the hunter is close enough when hit, it will cause him/her to fly back into the twister. The second twister will remain on the field for several seconds before disappearing and can still damage the hunter.

When weakened enough, Amatsumagatsuchi uses its other most powerful move: it flies high into the air and uses three massive water beams. The attack consists of two parts; the beams themselves will strike the ground, and then the areas where the ground was struck explodes with water.


  • Its front two fins can each be broken/damaged. The head can be damaged twice; the first time Amatsumagatsuchi will lose one horn, the second time its right mustache will be cut. Amatsumagatsuchi's back can also be broken. In addition, its tail can be severed, giving two extra carves.
    • Breaking parts of Amatsumagatsuchi or severing its tail doesn't have any effect on his powers, unlike previous Elder Dragons (like Kushala Daora). However, Amatsumagatsuchi falls if its fins or its chest receive enough damage, giving a good opening to attack. This can be done several times during the battle.
  • Amatsumagatsuchi can only be fought on Mountain Summit. After defeating it, the stormy weather will clear immediately, as proof of its ability to harness the power of storms.
  • Ballista Shots and the Ballista Binder can be used on Amatsumagatsuchi. If it is hit with Ballista Binder while it is performing an attack, other than its sucking tornado or water beam explosion, it will fall to the ground for a while, leaving some difficult-to-reach parts, such as its back fins and tail, open to attack.
    • The Ballista Binder is only effective when Amatsumagatsuchi is using an attack.
    • However, like items on other monsters, the Ballista Binder will be less and less effective on Amatsumagatsuchi as several successful shots are performed. After roughly three or four uses, the binder's duration will become so short that it becomes almost useless for anything except interrupting Amatsumagatsuchi's attacks.
  • When Amatsumagatsuchi is using its sucking attack, operating the Ballista can prevent the hunter from getting sucked towards it.
  • Once Amatsumagatsuchi has been slain, a special ending musical theme will play.
  • So far Amatsumagatsuchi only appears in one Monster Hunter installment, and is absent in subsequent series.
  • Like Kushala Daora, if slain, the weather changes.

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