A/N: Okay, just to clear up the confusion regarding the Karasu Tengu ahead of time, my depiction of the beast is more of an anthropomorphic dinosaur-like crow monster with near human-like intelligence and the body shape of a tall powerful man. The only human-like weapon it'll be wielding is the yari, or the spear, stolen from its human prey. The clothing for this beast would be a sparse coat of animal furs and a loin cloth to deviate from the traditional Japanese clothing it is usually depicted with as I can imagine why it would not wear the fancy Samurai armor if all that does is slow it down and make it an easier target. Also, its predatory, arboreal lifestyle would require great mobility and stealth among the trees, thus a tribal outfit would make more sense for Karasu Tengu.

Apart from that, I'll be going by this order:

1st – Dragons

2nd – Frozen Titans

3rd – Hidden Monsters

Then there's the "language" and "social structure" of the animal factions. Their language, while not sounding like how we humans usually speak our own languages, would be bordering between basic animalistic, primitive roars and human-like sentence structure.

The factions are more like the ancient tribal societies with each faction having a clear hierarchy loosely based on their natural roles in their respective ecosystems. To be clear, all the beasts/monsters listed in each faction are each an apex animal individually. The hierarchy is based upon the Darwinian rule of survival with the most ruthless apex beast having absolute control of the faction and reigning over its fellow apex creatures with an iron fist.

That class is called the Alpha Class, which these animals are well-balanced in every category, other than their high aggression and cunning that helps ensure their dominance. The second would be the Swifter Class, or the animal equivalent of the human Assassin classes; beasts that excel in speed, stealth, and quick attacks meant to disorient and then kill their enemies before they knew what hit them. The third class would be the Brute Class. For obvious reasons, the Brutes are powerful brutish monsters that generally traded speed and cunning for gigantic sizes, power and extreme aggression, making them more aggressive than the Alphas. While they're not truly dumb, their aggressive, volatile nature prevents them from forming a coherently structured group for long. They function more as tanks as they're more durable to much more damaging attacks than other animals and are meant to strike fear into their enemies due to their sheer presence while destroying large swaths of them with severe powerful blows. The fourth class are the Betas, which are beasts that are like a hybrid between the Swifters and the Brutes in that they both possess the terrifying equality of speed and power. They're relatively smarter than the Brutes, and comparable in velocity to the Swifters' minimum speed, but compared to the Alphas, they are relatively less aggressive. The fifth class are the Flyers. These animals are predominantly arboreal with their attacks being launched from the sky and landing on the ground only when necessary to rest. They're more agile and faster than the Swifters in the air and just as deadly as an Alpha in terms of attack power. However, they're weaker and less durable than most animals in all factions. The sixth class is termed Charger in that these animals are like the Brutes, but their main function are like that of attack dogs or battering rams to cause as much damage as quickly as possible. Then there are some animals don't fit neatly into either of the categories, making them the animal equivalent of "Hybrids".

Apex Class – Eastern Dragon (75 - 90 feet long)

"The heavens have been disturbed."

A long, gracile serpentine creature about as long as a jet airliner slithered, crawling on its relatively short, but powerful limbs armed with eagle-like talons through the bamboo forest. The beast had forest green scales with yellowish stripes. He had an alligator-like snout with deer antlers on his head with a row or dorsal spines running from his neck down to the base of his tail. The tip of his tail ends in a spiky cudgel.

"Because mankind had completely forgotten the covenant I made with him."

The mythical ancient reptile walks out of the forest to confront an army of Samurai guarding the gateway.

"He threw away the lessons of harmony and peace."

A Kensei rushed up to the beast with his nodachi ready to slice him down. The dragon swayed his serpentine neck side to side avoiding the slashes until he launched a counterstrike, by lunging at the Samurai with his jaws clamping harshly onto him. The sound of bones being crunched could be heard with the man screaming in pain within the dragon's jaws.

"And sent the world into chaos by waging war against his brothers and sisters."

The Eastern Dragon deflected a Raider's blow and knocked the long battle axe out of his hands with the swipe of his tail.

"I, as the Dragon, the Emperor of all realms…"

Fire spewed out from the dragon's mouth, incinerating a Lawbringer unlucky to stop himself on time from charging recklessly into the stream of flames.

"…refuse to let this go unpunished any longer."

The Eastern Dragon easily avoids the swinging arcs of an exhausted Jiang Jun, flying in the air and suddenly snaking behind him by clawing him in the back. The Jiang Jun was knocked face first into the pavement of the Japanese moat with claw marks on his back.

"I won't let my kingdom fall asunder by the wickedness of men."

The dragon is seen hovering above the horde of knights before charging through the ranks knocking them over before he stops in the middle of the battlefield, slashing them with his claws and bludgeoning anyone too close with his lengthy tail.

"My claws…"

A Shugoki was desperately trying to block the Dragon's claws that were imbued with flames and lightning from reaching him, but it proved too much for him as the dragon's sheer power and wrath shattered the Kanabo. The second swipe of the Dragon's claws electrocuted and burned the Shugoki simultaneously while it threw him off the castle walls as he fell to his death.

"And the very celestial bodies that I wield will show them how costly it was to incur the wrath of the Dragon after all those years spent fighting each other."

The Eastern Dragon summons thunderous storm clouds with tornados surrounding him with the Samurai and Knight armies looking on, terrified of the angry demeanor coloring the Eastern Dragon's ancient eyes.

"They will be reminded…"

The Dragon clenched a scared Orochi tightly in his scaly clawed fist, glaring down at him with eyes that burn fiercely like the Sun.

"That when you break the covenant with the Dragon, you challenge his authority and spit on his divine will."

The Orochi howled in horrifying agony with tears falling from his eyes as the Dragon crushed him in his fist. Then the beast ends his life abruptly by slamming him into the ground.

"And those who now desecrate my Kingdom will face Heavens' judgment."

The dragon descended from the storm clouds onto the rooftops of the Japanese fortress. The Eastern Dragon looms over the ruined fortress city with buildings set on fire and the people running away from the flooding sea engulfing the streets.

"The will of the Dragon is the will of the heavens."

Swifter Class – Dakotaraptor (18 - 22 feet long)

"Humans are so shallow thinking that they have mastered the art of stealth and assassination for centuries."

A bird-like dinosaur about the size of a horse and with the plumage and coloration resembling that of the Harris's Hawk was crouching deep into the tall grasses. She was stalking towards a war expeditionary force of Knights undetected.

"Wolves have mastered the art of stealth for thousands of years before the human assassins came into existence."

The dinosaur was soon joined by four more others of her kind. One of them softly tapped its sickle-clawed toe in restrained anticipation.

"Raptors have mastered it for eons."

When a Knight Warden and his horse got close enough unwarily to the pack, the leading female Dakotaraptor shot out from the grass cover in a shocking burst of speed. She let out an ear-piercing shriek, powering her strong, bird-like legs and feet as she then pounced onto the startled man and panicked horse. The force harshly pushed them both to the ground where she slaughtered the knight's steed by a bite to the head and stabs to the neck with her foot talons. Other Dakotaraptors mercilessly ambushed the expeditionary party and mauled them to their grisly deaths with only one horse managing to flee alive.

"We have long lived hidden in the jungles."

The Kensei and the Shugoki flinched with their nerves on high alert when they heard rustling in the undergrowth of the swampy jungle.

"The shadows protected us from the prying eyes of the outside world."

The duo became paranoid when they heard multiple sounds of several somethings rustling through the thick foliage. The Shugoki gasped when he saw a shadow moved behind the giant ferns. He charged at the shadow and brought down his club to bear down onto the bush only to hit nothing but vegetation, leaving him incredulous.

"Those who intruded into our territory, their fates were sealed. There is no escape from us."

The raptor's hawk-like amber eyes peered through the dense foliage facing them on their right side. Her jaws chittered with her teeth clacking subtly, producing chirping sounds to her pack members hidden behind the foliage surrounding the Samurai.

The Kensei and Shugoki were wary when seconds have passed in silence. The foliage rustled once more and rushing out from it came a terrified warthog, squealing in terror. The two let their guard down when a Dakotaraptor jumped out of the bushes, pouncing onto the Kensei. The Vanguard-class warrior swore and screamed hysterically as the hawk-like dinosaur bit down onto neck. Then as quickly as it appeared, the dinosaur disappeared with Kensei effortlessly flung into the bushes, leaving the Shugoki stunned and shocked still trying to comprehend what just happened. The raptor and the second one hidden in the bushes rushed to the downed Kensei and made short work of him with his screams cut short when they tore savagely into him.

The Shugoki nervously backed away from the carnage but was stopped dead in his track when he heard sounds of hissing and crowing behind him. He stiffly turned his neck around to find the alpha female Dakotaraptor crouched with her arms and claws outstretched, jaws gaping as her fangs were barred, and her tail upright and tail feathers fanned out. The widely-girthed warrior stumbled away from how close the raptor was to him without him knowing before he barely composed himself to put up an aggressive front as best as he could, slamming his kanabo down to draw the metaphorical red line between him and the murderous beast.

"Our world has changed for the worst."

The trio of Dakotaraptors are posturing and screeching aggressively against the Warden, the Peacekeeper, and the Conqueror.

"But we adapt and evolve like our kind has always done."

A Dakotaraptor stalks from the rooftops above the village in the dead of night.

"No matter the hunt..."

A raptor lashes out with a series of vicious kicks, eviscerating the Warden right in the chest with its sickle-like talons.

"No matter the prey…"

A Warborn didn't even get the chance to hack his sword at the swiftly charging Dakotaraptor when it jumped and landing onto his shield, using it as a springboard as the beast latched onto the unsuspecting Viking's head with its bird-like jaws armed with sharp teeth. Acrobatically, the beast flipped and swung the heavyset Viking around before flinging him forcefully onto the ground.

"No matter our surroundings…"

The Dakotaraptors clambered up the cliff and into the abandoned Pagoda, setting up a trap for potential victims.

"It is neither our speed or ferocity that make us feared."

A raptor swiftly hacked off an arm with its teeth and jaws. A Conqueror was deprived of her good right arm and her chained mace literally as she was clutching her bloody stump with her blood pooling profusely beneath her feet. She's surrounded by several Dakotaraptors that had their yellow eyes glowing orange with murder in their eyes.

"It is our bloodlust."

The hapless Conqueror went for a desperate punch with her left arm and shield, but her attempt was ultimately futile when the alpha Dakotaraptor weaved through her telegraphed attack and with cat-like grace pounced onto her.

"Those who live by the Claw, will die by the Claw."

A Knight Commander dropped dead the moment he stepped outside out of the castle doors to escape with grievous wounds on his person. The Dakotaraptor stepped out with blood-stained jaws and screeched out to the carnage in front of her in the Iron Legion Fortress caused by her pack.

Brute Class – Tyrannosaurus Rex (39 - 45 feet long)

"My kind, known to our fellow beasts as the Tyrants, have always prided ourselves as being the rightful kings of the Jungle. And it had been always during our reign that the Jungle prospered."

The gigantic, bipedal dinosaur with dark cobalt, armored scales resembling chainmail armor with mottled whitish-gray stripes on its sides, thighs and base of the long, heavy tail. The rest of the tail is somewhat segmented by blackish stripes. Yellow bony spines line its entire thick, powerful neck, back, and tail. Bright orange-redish eye ridges cover over the T. rex's red eyes and orange bony plates cover the nasal ridges of its boxy, rectangular heavyset snout. The snout or jaws are armed with spike-like teeth the size of bananas. What was distinguishing about this beast was the relatively small, human-sized forelimbs with two fingers armed with sharp talons compared to the long, powerful birdlike legs with massive three-toed feet.

"Power is everything because it is the true law of the Jungle. The strong rule over the weak."

The T. rexstomps with regal strides befitting its position as the apex predator as its thunderous footfalls made its royal, yet monstrous presence felt throughout the jungle. Many of the lesser animals, including short-horned, tusked deer and even the elephants stayed clear of the front heavy Dinosaur King.

"Our might is always right and absolute, enabling us to bring Order and Balance to an otherwise unruly wilderness that was once our vast Kingdom."

A T. rex ambushed a lone elephant by headbutting it harshly, making the shocked pachyderm topple to the ground. The carnivorous dinosaur then harshly stomped onto the elephant's ribs, breaking four of them in the process before applying its bone-crunching bite onto the beast's neck with devastating results. The T. rex roared to the heavens and then feasted on its kill.

"Nobody dared to challenge our power."

The T. rex stood on the cliff looming over the Myre, letting out a elephant-like foghorn roar.

"Until the hairless monkeys that we deemed inferior dared to defy us; first by defiling our lands, and then competing with us over our food."

Several Samurai on horseback hunted deer with their bows and arrows through the swamp lands. An archer shot his arrow into the heart of a Struthiomimus. The Japanese people were seen cutting down the subtropical trees to build more of their settlements.

"In our absence, the humans ruined the very balance of power not only in their disregard for our ancestral homeland, but also in their reckless wars against their brothers and sisters."

Samurai armies clashed fiercely with the raiding Viking parties.

"But nothing is more infuriating than to see them place their shallow faith into their flawed innovations that only serve to highlight not their strengths, but their inept ability to showcase them."

Several catapults launched their flaming boulders into the walls of a fortress, reigning utter destruction onto both the surrounding jungles and the gated wall.

"However, the Tyrants are anything but idle."

A T. rex was hidden in the darkness of the forest until it burst out, ambushing an unsuspecting convoy of Knights.

"We will not tolerate their insolence and weakness anymore."

The Lawbringer brought his long pole axe onto the head of the T. rex, which only hardly caused the beast to flinch when the blade partially succeeded in hitting the bone ridges of the snout. In retaliation, the giant theropod swooped its body and heads downward, brutally slamming into the Lawbringer and the nearby soldiers.

"It is our time to show them their place in the food chain."

The T. rex bit into a Nobushi, shaking her vigorously like a ragdoll with blood being splattered all over with the sounds of bones being crunched.

"To remind the humans who's really the top dog."

The dinosaur chomped onto the shaft of the Viking Raider's war axe and effortlessly wrestled it out of the warrior's hands.

"To spread fear into the hearts of men by terrorizing them with our sheer bloodlust, ferocity, and strength."

A platoon of terrified Samurai soldiers tried to put up a strong bulwark of defense at the gate to the Dawn Empire fortress against an enraged, charging T. rex. Their attempt ends in miserable, catastrophic failure as the beast easily barreled through the men, crushing many underfoot and gulping up some unfortunate stragglers. The gates were rendered into useless splinters when the T. rex did a pouncing jump onto the doors, destroying them with 9 tons of its reptilian flesh.

"Our jaws will make short of their so-called strongest warriors and their constructions."

The T. rex was seen gulping down a Shugoki down its throat while another one toppled down a catapult and proceeded to tear it apart.

"And the Tyrant's tail will send many flying to their deaths."

The Tyrannosaurus performed a low sweeping arc of its muscular, scaly tail that clubbed a desperate Valkyrie away into the castle's moat.

"I will crush and trample the weaklings underfoot severely."

A T. rex caused several Knights and Samurai warriors to stumble onto their butts when it stomped its foot to generate an abrupt seismic quake.

Another scene showed a bloodied, mangled Centurion being thrown onto the ground by the T. rex from its jaws. He fruitlessly tried to crawl away when the dinosaur ended that with a brutal stomp that flattened him into a bloody smear.

"So that Man will never forget..."

Ayu, Okuma, Momiji, and the Orochi were standing in the middle of the jungle bloodied and exhausted with their comrades either dead or tired just like them. The ground shook beneath them and the trees snapped with the sound of the underbrush being crushed.

"…that the Law of the Jungle still applies…"

The T. rex confidently stomps out into the clearing, looming over the terrified Samurai.

"…because war is a battle for survival, and Tyrants are Kings of…WAR!"

The brutish King of the Dinosaurs lets out an ear-splitting roar right in their faces, reverberating the entire jungle.

Beta Class – Karasu Tengu (7 - 8.5 feet tall; 9 - 10 foot wingspan)

"Long ago, when our original homeland was still young and fresh with the forests green and lush, we were once numerous as the stars."

Dwelling within a 20-foot wide nest that was built in a ruined Shinto temple was a feathered humanoid beast with the head clearly resembling that of a bird, specifically a crow. The exception to that would be the presence of sharp dinosaurian-like teeth rooted within its slightly curved, heavy bill, and the eagle-like mane of cobalt feathers for its headcrest.

The avian creature's body shape bears uncanny resemblance to that of a towering, powerful man with long, strong legs and powerful raptorial feet, making it a relatively tall, strong monster standing at 7-8 feet tall. It has brawny human-like arms that are partially feathered and armed with four sharp, opposable claws for its hands. The monster has black and dark indigo plumage with the only parts of its body exposed are the scaly legs and hands. The chest and abdominal feathers are bloody maroon in color. The tail feathers are noticeably dark red. Its most eye-catching feature were the pairs of large dark, clawed wings from its back.

Another thing immediately noticeable was that this beast was wearing a tribal outfit. Mostly a sparse coat of animal furs and a brown loin cloth.

The Karasu Tengu was on guard with steely, sharp brown eagle-like eyes gazing into the Myre beyond the temple.

"The trees and the high mountains were and are our domain. We, the Tengu, call the canopy our home."

A Tengu was seen hovering through the canopy and hopping onto branches with the expert grace and finesse of the ninjas, landing silently without making them and the leaves shake.

That, however, all changed when our home island sunk beneath the waves.

The bird-like Tengu stood at the dock situated at the bank of the swamp wielding a yari.

Like the humans, we were forced to make home in the Myre and adapt.

Several Karasu Tengu were perched in their primitive huts built on wooden platforms that serve as guard outposts.

An arboreal village of the Tengu built in the canopy above the Myre consisted mostly of wooden huts and platforms that accommodated the Tengu's aerial mode of getting their way around through the trees.

For years, we've tried to isolate ourselves deeper into the jungle from the outside world to remain hidden from human eyes.

Two Karasu Tengu sentries sheltered themselves within the safety of the canopy from the monsoon rains as they ate sparingly on their rations.

But fate would have not it with our way for long.

A curious, fluffy Tengu chick, equivalent in physicality and age of a young human child at the age of eight, spotted a group of humans accompanied by a Shugoki as they're revealed to be a hunting party when they were wielding bows and arrows. The chick's eyes widened in curiosity at the strange wingless beings that were approaching a huge boar caught in the net trap. The Shugoki walked to the struggling, dying animal that was apparently shot in the shoulder as well as evidenced by two arrows to that spot. He, with a single slam of his Kanabo, cracked boar's skull, ending its misery.

The Tengu chick was so shocked by the gruesome act that it accidentally lost its footing. It fell onto the forest floor next to the men, startling the Samurai. The chick croaked, more shocked than hurt, as it slowly got up to see the humans' curious stares aimed towards it. The baby bird-like monster was terrified of the scary masks the Samurai wore. Worse, with the chick's back wings not fully developed, it couldn't fly. The only option was to run, but the chick was too paralyzed with terror from seeing the men's nasty weapons, with the Shugoki's in particular that was coated in the boar's blood.

The Samurai themselves didn't know what to make of the strange birdlike creature that had the overall look of a crow hatchling, but with the body of a human child. The Shugoki gestured something to his subordinates, which the chick couldn't understand. However, the chick immediately understood with terror rising in its tiny breast when the Shugoki reached out with his hand stretched to grab it. That caused to chick to screech and caw hysterically like a terrified human toddler.

That caused several things to happen at once with one being that eight young Tengu that were slightly older than the chick, who are probably the chick's peers, to swoop down clumsily onto the Samurai. The Japanese warriors were more surprised than hurt by the younger avians's attempts to hurt them with wooden sticks and rocks. None were more annoyed than the Shugoki, who brusquely plucked an older young Tengu that cracked his mask with a rock off of him. Slamming the juvenile avian onto the mud, he was about to end it with the younger chick hiding its eyes away from what's about to happen. However, none of them saw a shadowy figure drop behind the Shugoki and what happened next resulted in the big man having a spear blade thrusted through his neck.

The sumo-like brute gurgled out, spitting out blood through his mouthpiece. The rest of the samurai and the Tengu younglings stopped what they were doing with the former in gasped shock of what befell on their leader. The blade was retracted and the Shugoki slowly fell dead in front of the chick and the older youngling he was about to smash. The chick slowly removed its feathery arms to see that its savior was none other than an adult Tengu wielding the yari.

We were being invaded soon afterwards.

The Samurai traversed through the Myre accompanied by a mob of angry villagers, looking for the Tengu that massacred their local heroes.

From all fronts…

The Iron Legion knights were marching upon the Dawn Empire in a massive army, cutting through swaths of the subtropical forest up in the high hills, unaware of the resident Karasu Tengu.

On the other hand, the Warborn Vikings came back to the Japanese homeland to conduct another raid, sailing from the seas with their ships. Another group of them situated their war camp deep within the Karasu Tengu's territory.

The humans soon cut down our villages…

The Iron Legion knights were relentless in chopping down bamboo and wood trees, which resulted in terrifying the Tengu populace high up in the canopy with many forced to evacuate their nests. The crow-like avians helplessly watched their villages fall to their doom with deafening crashes.

And not too long, they started to hunt us down when they discovered us…

A Viking Berserker was pursuing a Tengu hopping on one branch to another to escape from him. The bird monster thought he had lost the Berserker after quite some distance only to fall into a trap when he was hit in the wing by two arrows from the Viking archers. He soon fell into the net meant for him as it now ensnared him. The Vikings looked at their captured prize with glee and they hollered in celebration of their successful hunt.

But they fail to realize that a Tengu, when cornered, is a far more dangerous adversary…

A Tengu warrior goes all-out berserk against a Viking Valkyrie and the Raider, in spite of his shredded wings, wounding them greatly with his spear and vicious drop kicks when he used his spear to pole vault himself onto the Valkyrie kicking her against the shield.

The Tengu are not only fierce, acrobatic warriors…

A Karasu Tengu deflected an Orochi's sword with her yari and did a backflip kick onto his head.

But also expert tricksters and masters of deception…

A Warden was sleeping in his quarters when a Tengu stealthily dropped down near to it and shapeshifted, assuming the exact appearance of the Centurion. She wielded the very knife stolen from the Peacekeeper's quarters. The "Centurion" stabbed the Warden through his throat and he died in his sleep.

One of the guards spotted the "Centurion" and was understandably shocked and hurt by what he saw. The "Centurion" ran away to the real Centurion's headquarters so fast that the guards had a hard time catching up through the mazes. Once the doppleganger teleported herself into the Centurion's headquarters, she put the very knife that she had stolen onto the table where the Centurion was sleeping in his bed. When that was done, the Karasu Tengu disappeared in a black cloud of smoke and feathers that soon dissipated into thin air without the Centurion being aware of it.

The real Centurion was startled from his sleep when he heard harsh banging upon his door. Within seconds, the door was slammed off of its hinges and the next thing he knew, the Centurion had blades pointed at him from all angles. The Peacekeeper, who had her knife stolen, pointed an accusatory finger at him as soon as she saw her kris knife that was coated with the Warden's blood lying on his table. The Centurion was in absolute disbelief of the accusation with a Lawbringer now blaming him for the murder of the Warden.

We, the Tengu, are survivors...

The Tengu flew up into air from a Viking tower as a cannonball smashed into it.

Fighters...

An Arumusha had his face and hat socked by the shaft of the Yari wielded by Tengu that parried his attack.

A Kensei had been impaled in the chest and being pushed and lifted off the ground by the astonishing strength of the humanoid crow.

The Shugoki and the Highlander were simultaneously blinded and sliced by the Tengu's wings and spear when the monster twirled about in a whirlwind.

...and deceivers.

A Warlord approached what looked like a dead deer in his path. As he looked down to examine the corpse, he heard crowing behind him. He turned around to see crows taunting him in the treetops, throwing seeds and rocks at him with their beaks. He unsheathed his sword and banged it on his shield to shut them up.

The crows shut their crowing, but not for the reason he hoped for. He turned around only to feel something sharp pierced his stomach. He looked down to see a yari gutting him. The Warlord coughed up blood and looked, much to his horror and dismay that the "corpse" stood up wielding the spear that impaled him. The illusion dispelled, revealing the Karasu Tengu.

It was the last thing he saw before one of the crows turned back into a Tengu and flew down, decapitating the Warlord's head with a sheer swipe of its clawed hand.

We are Yokai...We are Tengu!

An elderly, gray-silvery feathered Tengu alpha with more ornate tribal clothes raised up his yari and the head of a Kensei in his other hand, and screeched out loudly in his war cry. The other Tengu followed, crowing with him with their weapons raised high up into the night sky where the moon shined on their village.