Deviljho is a very large, bipedal Brute Wyvern characterized by its uniform forest green colouration and muscular upper body. Its thick hide is littered with short, jagged spines that reach a maximum height along the back and tail. Deviljho has a narrow snout with a large lower jaw, covered in multiple rows of teeth spreading outwards from the mouth. It has massive, powerful hind legs, but tiny, poorly developed forelegs that it rarely utilizes. When provoked, Deviljho's back and shoulder muscles swell considerably. During this period, areas of its skin will take on a bright red colouration.
Deviljho is armed with a powerful set of jaws that it can use to deliver bone-crunching bites to prey and foe alike. In addition, its powerful hind legs allow it to run at relatively high speed and leap considerable distances towards prey. When enraged, Deviljho is capable of producing a mysterious clouded emission which can be shot out of the mouth in a stream at prey. This substance contains the Dragon Element and can be very deadly to hunters as well as other monsters.
Deviljho is a nomadic monster, prone to wandering vast distances in search of prey. Its status as a super-predator allows it to overtake the territory of any monster that stands in its path. Because of the extreme amount of energy its body consumes, Deviljho is always in search of food sources. It is known to be cannibalistic, and is also prone to eating prey alive in order to waste as little time as possible in replenishing its energy.
Because of its nomadic nature, Deviljho is known to inhabit a wide variety of environments, such as Tundra, Deserted Island, and Volcano, and has even been seen as far as the New World. Its presence is often disruptive to the natural ecosystem.
Other Non-Subspecies Forms
Main Article: Savage Deviljho
Deviljho makes a return in Monster Hunter 3 Ultimate along with its Variant known as Savage Deviljho (怒り喰らうイビルジョー). Savage Deviljho appears slightly different comparing to Deviljho when it is in its enraged state.
Main Article: Aberrant Deviljho
Four Heavenly King Deviljho
Main Article: Four Heavenly King Deviljho
Analysis and Guides
For details on older games this monster has appeared in, see Deviljho Guides.
|Deviljho Analysis for Monster Hunter 4|
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|Brighter Red means more damage, while Darker Red means lesser damage.|
|Raw Hitzone Damage Data|
|Hitzone||Cutting Damage||Impact Damage||Shot Damage|
|Element Hitzone Damage Data|
|This Monster is weakest to:||Thunder or Dragon|
|Status Effects Data|
|Item Effectiveness Data|
|MH3: Deviljho and Savage Deviljho Music Theme|
MH4U Breakable Parts
- Deviljho usually prey on Aptonoth, Popo, Slagtoth, or Gargwa to recover stamina.
- It sometimes eats from the corpse of a slain monster, its own tail, or an already captured monster. It sometimes attacks other monsters in the area if it's hungry; thus, dealing damage to them.
- Deviljho's roar requires HG Earplugs to block.
- Like many other monsters, such as the Nargacuga, Zinogre, and Lagiacrus, the Deviljho enters a rage state. Its main body becomes enlarged with red streaks over the top of its back, near its mouth, and many tiny red marks all over. It begins breathing Dragon lightning around its mouth. This will not hurt you, but it will do its signature Dragon Breath attack at least twice until it calms down.
- Deviljho can leap at a hunter and pin them down, before attempting to devour them. Each bite will cause a significant amount of damage, until the player is able to break free or throw a Dung Bomb. Another hunter who is not pinned can throw a dung bomb for the same effect. If the Deviljho is exhausted, it will recover stamina and inflict Defense Down on the pinned Hunter due to its corrosive saliva. 
- Deviljho performs a Dragon Breath attack at a 180 degree angle sweep from right to left. The only safe spots during this attack are, near its tail or underneath Deviljho. If a player finds itself within the range of the breath, the best options are to block with a shield, or panic dive away. It is possible to evade this attack by rolling but it's unsafe to do so unless the timing is spot-on. The Dragon Breath attack has extended reach from 30 m/129 ft up to 35 m/140 ft.
- Many of Deviljho's movements include damaging the players via the swing of its tail. When the tail is severed, it would stumble away from it because of the massive weight loss, causing it to lose balance.
- Its rock flinging attack may reach up to 40 m/148 ft maximum range (in game range calculation).
- Even though Deviljho can cause great damage to the ecosystem, it is not an Elder Dragon.
- Like Anjanath, Deviljho closely resembles the real world Tyrannosaurus rex.
- Deviljho's Rock Fling attack will inflict different Blights depending on the area. In Tundra, it inflicts Iceblight, in Volcano it inflicts Fireblight, and in Flooded Forest it inflicts Waterblight.
- Deviljho is capable of throwing rocks from land and hitting hunters in the water in the Flooded Forest, including hunters under the surface.
- When fought in the Tundra, Deviljho will limp away to Area 1 and break into a hidden area to rest. The unlocked area is one of the few places where Dragonbone Relics can be gathered.
- If Deviljho is not weakened and is in Area 1, the blockade can still be broken down if Deviljho attacks it. If Deviljho breaks the blockade on its own, without the hunter baiting it into attacking the rubble, it drops a shiny.
- If Deviljho uses a 'Stomp' Attack in Area 7 of the Tundra, icicles will fall from the ceiling causing minor damage to anyone they hit.
- There was an event quest, where an extremely large Deviljho (called a "World Eater") was in the Deserted Island. Because of its size, weapons can barely reach its underside.
- Deviljho can no longer be hunted in Monster Hunter 3 because the online servers have been shut down.
- Deviljho has a new attack where it quickly swings its tail first to its right, then around itself to its front while slightly moving forward during the attack. Because of its swift speed compared to the rest of Deviljho's attacks, it can be tricky to avoid if it catches hunters off-guard. The best way to avoid this attack is to quickly get underneath Deviljho.
- Its Dragon Breath no longer inflicts Dragonblight because the Dragonblight status ailment has been removed in Monster Hunter Portable 3rd. The Dragonblight effect returns in later games.
- Deviljho can now be fought in the very last village quest. It will appear in the Land Arena (with its own introduction cutscene), and after it has been slain or captured, Tigrex and Nargacuga will be fought simultaneously. Despite being met in a Low Rank Quest, the three monsters are as powerful as their High Rank equivalents much like the final Village Quest Monster Hunter in Monster Hunter Freedom Unite where monsters were G-Rank.
- Like Duramboros, it may counter-attack the hunter immediately after it staggers, like when its face has been broken.
- There is an event quest, in which the hunter must defeat a Deviljho without any piece of armor.
- Deviljho can now climb with its mouth.
- In G-Rank, it throws bigger boulders, and is able to perform a new attack where it lifts its upper body and walks around, then blasts its Dragon Breath upwards.
- Deviljho can be affected by the Frenzy Virus and the Apex status.
- Apex Deviljho's weak spots are its belly, back, legs and tail tip. Attacking any other part without the Drive Wystone will cause the weapon to bounce.
- Apex Deviljho uses G Rank Savage Deviljho's moveset.
- Apex Deviljho creates an earthquake aimed at the hunter when it stomps.
- Deviljho's chest can be wounded.
- Deviljho was permanently added to the game on March 22, 2018 (UTC).
- Deviljho will appear as an intruder in High Rank quests and expeditions upon completing the ??? Rathian investigation quest. 
- Deviljho can grab smaller large monsters like Great Jagras, Kulu-Ya-Ku, Tobi-Kadachi, Tzitzi-Ya-Ku, and Dodogama in its mouth and use them as bludgeons. It can even grab Odogaron with minimal effort. It can also throw them directly at the player for a considerable amount of damage.
- Deviljho can still attack while caught in a Pitfall Trap, being able to slam its torso down and in some instances breathe dragonblight. 
- Deviljho displays turf wars with most "top of the food chain" monsters ( Rathalos, Legiana, Diablos, Bazelgeuse) while exhibiting normal combat with "mid tier" monsters, such as Anjanath, Barroth, Jyuratodus, etc. It does not have turf wars with subspecies.
- Deviljho shares a pin attack with Anjanath, but with the inclusion of causing Defense Down as well as increased overall damage.
- Unlike previous games, Deviljho no longer has black eyes, and instead has yellow eyes that will gradually change color to red depending on its rage mode.
- Deviljho may launch a counterattack after being staggered. If hit during this counterattack, it will be left in a vulnerable state for an extended period of time and it's Dragon powers would be doused off. The Deviljho will still remain in rage mode, albeit unable to use its Dragon breath and thus the Agitator skill can still remain active even after a successful attempt to exploit this weakness.
- Tempered Deviljho is exclusive to the "Relish the Moment" event quest.
- Deviljho is an Exotic Species (遷悠種)
- ↑ http://www.monsterhunterworld.com/us/topics/update/
- ↑ https://youtu.be/WxAxIy1DzXE?t=6158
- ↑ https://youtu.be/WxAxIy1DzXE?t=6427
- ↑ https://clips.twitch.tv/FurtiveDeterminedTildeAliens