Taupe Trakhios

Black Diavios is a Flying Wyvern and a Hybrid Species of Black Diablos and Black Gravios. Being the Hybrid Species of the Subspecies of Diablos and Gravios, Black Diavios is also considered the Subspecies of Diavios.

Physiology
Black Diavios is the offspring of a Black Diablos and a male Black Gravios. This means that Black Diavios has an appearance which largely resembles the regular Diavios, combining elements from Diablos and Gravios or, in Black Diavios' case, Black Diablos and Black Gravios. Unlike Diavios, it is black in color and the top of its "pinecones" are red in color. It's also slightly larger and more muscular than the regular Diavios.

Backstory
It's said that Black Diavios was created in the same place as the regular Diavios, Mezeporta. But while scientists were expecting to create a regular Diavios, they got a Black Diavios. The scientists were frustrated by the fact that they couldn't figure out why this colored variant was happening. When the hybrids went rogue one day, the Black Diavios escaped into the wild just like other hybrids. When the Guild started allowing the hunting of Hybrid Species, many went after several Black Diavios, but many didn't come back. Thus the Guild decided to only let the best hunters go after a Black Diavios as it can match even the strength of Elder Dragons.

Behavior
Being the offspring of Black Diablos and Black Gravios, the Black Diavios has a behavior which mixes elements from both of them. This does mean that its behavior largely resembles the behavior of the regular Diavios, but Black Diavios are even more aggressive and dangerous. This, combined with its larger size and strength, makes Black Diavios a threat even Elder Dragons would be careful around.

Hunt Cutscene

 * Location: Desert
 * Synopsis: As the hunter enters Area 5 of the Desert they notice several Genprey and Cephalos at the opposite side of the area as if they are scared of something. When the hunter walks forwards, all the Grenprey and Cephalos look towards the side the hunter is at. The hunter keeps walking until they are about to reach the center of the area at which point all the Genprey and Cephalos leave at the sight of something. The camera then turns around to face the front of the hunter and what's behind the hunter, which is a large black mass of some kind. As the camera focuses on the head of the hunter again, the hunter starts turning their head to look behind them which is when the hunter gets terrified. The camera then zooms out behind the hunter, clearly showing the large black mass now, which turns out to be a Black Diavios. The giant Flying Wyvern stares at the hunter and then roars loudly. The hunter covers their ears after which the Black Diavios tries stomping on them, but luckily for the hunter, they manage to leap out of the way just in time. The Black Diavios then roars again, starting the hunt.

Ecology Cutscene

 * Location: Obsidian Caves
 * Synopsis: The cutscene begins by showing a bunch of Felyne stuck in a cave because a large boulder is blocking their way out. They first all try to push it, but it doesn't even budge. Afterwards they try mining through it with their picks, but they barely even break a piece out of it. Suddenly, one of them gets an idea after which they start putting a bunch of barrel bombs around the rock. They then get back as all the barrel bombs explode, causing a massive explosion and shaking the cave and some of the surrounding caves. The camera then cuts to somewhere else as it shows a dark orange eye open up. The camera then cuts back to the Felynes which go to inspect the rock. But the rock is still mostly intact, making the Felynes realize that all their efforts are to no avail. Suddenly, they can feel the ground shaking behind them like something big is walking towards them. When the Felynes turn around to scream, realizing they woke up a Black Diavios which is now pissed. The Black Diavios roars and charges towards the Felynes and the rock. The Felynes run out of the way as the Black Diavios charges straight through the rock and out of the Felyne's sight. The Felynes jump with joy as they run past where the rock once was, ending the cutscene.

Abilities
Being the offspring of a Black Diablos and a Black Gravios, Black Diavios has a abilities from both of them which resemble the abilities of a regular Diavios, but amped up. It's capable of digging through the ground, producing a powerful roar and charging at high speeds with their horns like Diablos, and it is capable of releasing a potent knockout gas or a dangerous poisonous gas from gaps in its underside and releasing a flammable gas as a waste product of its heat beam and of its diet. It's capable of combining its abilities and powers for even more devastating attacks then its parents or the Diavios can do. This is seen in the fact that many of its attacks are faster and much more powerful than the regular Diavios.

Rage and Tired States

 * Rage State: When enraged, Black Diavios will huff out a flaming black smoke which looks like a mix of the effects when Black Diablos and Black Gravios are enraged.
 * Tired State: When tired, Black Diavios will start drooling and will often fail doing its elemental-based attacks. It will also take longer to recover after doing attacks

Frenzy, Apex and Hyper
Black Diavios being a Hybrid Species means that they're rare and thus it was difficult to confirm if it could be in any of these statuses, but theories were formed on basis of the parents. Thus it was theorized Frenzied Black Diavios, Hyper Black Diavios and Apex Black Diavios can exist. Eventually Frenzied Black Diavios was confirmed, but Hyper Black Diavios' and Apex Black Diavios' existences are still ambiguous.

Frenzied Black Diavios was confirmed pretty quickly after sightings of this beast started happening. Black Diavios, being categorized a monster which can match the likes of Elder Dragons, is seen as similar in power to Deviljho, if not more powerful. Thus a Frenzied Black Diavios would be around equal to a Frenzied Deviljho and thus Apex monsters. Frenzied Black Diavios has the usual changes of a Frenzied monster and also gains any changes and attacks which Frenzied Black Diablos and Frenzied Black Gravios get.

Hyper Black Diavios' existence is still questionable. Black Diavios in this state are again thought to be around equal in power to Deviljho in the same state. This would make a Hyper Black Diavios a serious threat that would need to be taken care of as soon as possible.

The existence of Apex Black Diavios has been theorized as the parents of a regular Diavios are capable of attaining this state, thus it is theorized that the parents of a Black Diavios should also be capable of attaining it. If one exists it would be around equal in power to an Apex Deviljho. This would make it a serious threat if one were to be found and would need to be taken down immediately as it could cause destruction otherwise only seen in the likes of powerful Elder Dragons.

Mounts
As Black Diavios is a Hybrid Species of Black Diablos and Black Gravios, its mount is a mix between the mounts of Black Diablos and Black Gravios. Just like Gravios and Black Gravios, it's also capable of being mounted on its stomach.

Taxonomy
Black Diavios is a Hybrid Species of Black Gravios and Black Diablos, the Subspecies of Diablos and Gravios, thus Black Diavios is sometimes considered a Subspecies of Diavios. This makes it closely related to Black Diablos and Black Gravios and all their other relatives.
 * Order: Saurischia
 * Suborder: Wyvern Feet
 * Infraorder: Heavy Shell Wyvern
 * Superfamily: Horn Wyvern (Mother) + Armor Wyvern (Father)
 * Family: Blos (Mother) + Armor Wyvern (Father)

Habitat Range
Black Diavios has been sighted in the same habitats as regular Diavios which include the Volcano (2nd), Old Volcano, Primal Forest, Everwood, Volcanic Hollow, Ingle Isle, Desert, Sandy Plains, Dunes, Obsidian Caves and Ancient Outback.

Ecological Niche
Black Diavios are omnivorous monsters as Black Diablos are herbivores and Black Gravios might occasionally eat meat. However, Black Diavios will more commonly eat minerals or go after vegetation like its parents rather than hunt for meat. But, when it does hunt for meat, it has a large variety of prey it can go after as its immense size and power allows it to hunt many monsters, even several large monsters, in its habitats.

Prey of the small variety can include the likes of Apceros, Bullfango, Ioprey, Remobra, Rhenoplos and Slagtoth in volcanic regions. Prey in desert regions can include the likes of Cephalos, Genprey, Hermitaur and Delex. In the Primal Forest and Everwood it can prey on the likes of Conga, Konchu, Velociprey and Jaggi. Larger prey can include Iodrome, Shogun Ceanataur, Volvidon and Yian Kut-Ku in volcanic regions, and Barroth, Cephadrome, Daimyo Hermitaur and Gendrome in desert regions. In the Primal Forest and Everwood they'll also feed on the likes of Congalala, Gypceros, Kecha Wacha and Malfestio. Even large and powerful monsters like Agnaktor, Glavenus, Rathalos, Mizutsune, Seltas Queen, Akura Vashimu and Seregios may sometimes be taken down by this gigantic monster for food.

While they're truly powerful, they still have plenty of competitors. Several of the aforementioned monsters can be dangerous for a Black Diavios. Other competitors can include Black Diablos, Black Gravios, Brachydios, Midogaron, Rajang, Deviljho, Teostra, Kuarusepusu and Odibatorasu. Despite this, many monsters would think twice before trying to challenge this mighty Hybrid Species.

Biological Adaptations
Thanks to Black Diavios being a Hybrid Species of Black Diablos and Black Gravios, it has many of the biological adaptations of both of these. Some of these adaptations include the Black Diablos' large horns, large blunt wing claws and strong tail, and Black Gravios' thick and durable rock-like body, fire abilities, knockout gas and poison gas. From both sides it has acquired large and powerful muscles which it needs to hold up its even larger size and mass. It combines the many adaptations from both its parents to be an even more dangerous and powerful Flying Wyvern, even more dangerous and powerful than the regular Diavios.

Behavior
Black Diavios is a highly aggressive and territorial Flying Wyvern, behavior acquired from both its parents. It will attack pretty much anything on sight which will often result in severe wounds for whatever it attacks. Even the likes of Akantor has to be careful around this Flying Wyvern.

G-Rank

 * Note: In G-Rank, Black Diavios has access to all moves from Diavios, HC Black Diablos, HC Black Gravios and has several physical attacks from Massacre Demon Diablos.

Calm

 * Roar: Black Diavios will roar in a similar manner to Diablos/Black Diablos and its roar sounds like a mix between the roars of Black Diablos and Black Gravios.
 * Leaping Drill: Black Diavios will roar and then leap up into the air, start spinning like a drill and try to land onto a hunter. When the Black Diavios hits the ground it will drill into the ground and then try coming up below another hunter somewhere. When it comes out of the ground it will send rocks flying out from where it left the ground. If hunters get hit by the Black Diavios in the initial part of the attack they can get knocked away and if hunters get hit by the second part of the attack they can get knocked upwards. If hunters get hit by the rocks which fly out they can get knocked down.
 * Flaming Cone Laser: Black Diavios will roar and will then make Gravios' flame laser sound as it starts firing a large laser in the shape of a cone at the ground in front of it. The Black Diavios will then start raising its head, expanding the size of the laser thanks to its cone shape until it's firing upwards at which point it will stop firing and will release flaming gases. This attack can knock hunters away and cause Fireblight.

Enraged

 * Shredding Laser: Black Diavios will first make the Gravios' flame laser sound after which it will start firing a laser which is so powerful it causes rocks to fly out of the ground where it shoots. Black Diavios will then quickly sweep the laser across the area. If hunters get hit by the laser they can get knocked away and be afflicted with Fireblight. If hunters get hit by the rocks that fly out they can get knocked down.
 * Shredding Laser Walk: Black Diavios will first make the Gravios' flame laser sound after which it will start firing the Shredding Laser, but then it will start walking around and repeatedly turning its head, making the laser repeatedly sweep across the area. If hunters get hit by the Black Diavios walking into them they can get knocked down and if hunters get hit by the laser they can get knocked away and be afflicted with Fireblight. If hunters get hit by the rocks that fly out they can get knocked down.
 * Flaming Charge: This attack is done after an attack which will cause Black Diavios to release flammable gases. After Black Diavios does it flammable gases-causing attack, it will paw the ground like a bull after which it will start charging towards a hunter when suddenly it releases its flammable gases, giving it a large speed boost. When Black Diavios has charged past the first hunter, it will either charge back at the same hunter or go towards another hunter after which it will turn around again and do one final charge. If hunters get hit by the start of the attack they can get knocked away and if they get hit by the Black Diavios when it's charging at full speed they will be send flying. If hunters get hit by the streams of flame it's releasing behind it they can get afflicted with Fireblight.

Breakable Parts

 * Head(1): Black Diavios' left horn will be broken off.
 * Head(2): Black Diavios' right horn will be broken off.
 * Head(3): Black Diavios' chin and frill will be damaged.
 * Chest(1): Black Diavios' chest will be broken open, revealing muscles.
 * Chest(2): Black Diavios' chest break will be larger.
 * Back: Black Diavios' will be broken open, causing gases to be released out of the holes there instead of under it.
 * Wings: Either of Black Diavios' wings will be scarred and damaged.
 * Legs: Either of Black Diavios' legs will be scarred and damaged.
 * Tail: Part of Black Diavios' tail will be severed

Blademaster
Skills: WIP

Gunner
Skills: WIP

Quests
WIP

Trivia

 * Black Diavios was a rare occurrence as most of the time when Black Diablos and Black Gravios were bred, the result was a Diavios.