Thryllasian Gatekeeper Factbook

The Gatekeeper

The Prison Tower

Captive Behemoths

Captive Leviathans

Captive Rocs

Captive Microorganisms
ZMA Series
The ZMA (Zulu-Mutated Abomination) Pathogens are a series of microorganisms that are somehow closely-related, all of them capable of spreading various unique diseases, each type having its own symptoms that distinguishes it from its fellow pathogens. In total, there are 21 microorganisms in the ZMA series.
ZMA 1, Resil Mirror Bacteria
ZMA 2, Equilibrium Virus
ZMA 16, Spearhead Worm
ZMA 21, Verndara Parasitoid

Notable Free Beasts
War Sound
While only the size of an average human, the winged human-like being named War Sound (who also always looks like a silhouette) has evaded capture from all for years. When he feels like stirring up trouble, he would pull out a conch horn & blow into it, calling in various beasts to do his bidding. No matter what was tried, he would continue summoning more & more to the point where one might think he has no fighting skill & is over-reliant on his minions.
Among these beasts include the Thryllasian Mantis, a massive mantis bigger than men & extremely stealthy; Photonic Birds, which are vultures that can emit a booming roar to change the light level of the area rapidly; & Great Stags, which are vicious moose that can use their weight to shatter armor.
Meanwhile, War Sound himself can change his conch horn to change its noise or pitch. By doing so, he can use it as both a weapon & a summoner for his minions.
War Sound would usually attack during storms in the Thryllasian region, when the magic would be disrupted. During this time, he would float above a hill & blow into his horn, summoning various monsters to assault his target.
Due to his minions & ability to weaponize sound, armies with mandrake earmuffs would be deployed to try to drive War Sound away or kill him. His threat to the Thryllasian region has also caused a massive bounty of 50B Desyllians (75 billion USD) to eventually be placed on his head.
However, nobody has killed him so far. No matter what they tried, War Sound could call practically an infinite amount of beasts. Even if you could get past him, he would not always be concentrating on blowing his horn. The rare few who have survived War Sound's assaults have claimed that he would continually track their every move.
According to the Gatekeeper — a demon who captures dangerous beasts for rehabilitation — around 50K have tried to slay him over the years, with many of this being armies. In fact, even the creator's avatar had tried to capture War Sound alongside a pope, the Gatekeeper, a spirit of mass destruction, & the powerful representative of Thryllasia, but somehow War Sound escaped.
It has been theorized that War Sound — alongside the other "Sound" beings — is a Creator's Relic released by accident (a Creator's Relic is an extremely powerful item used in the event of emergencies, such as destabilization of an area or in the event of another powerful being appearing).

Notable Anima & Enchanted Items
Funeral Wall Set (Anima)
Heartshatter, sword: Massively increase attack & damage, but massively reduce all defensive stats.
Knot of a Broken Promise, ring: Slightly increase all defensive stats
Despairing Star, pocket: Halve health & add to attack
Lamia Tome, shield: Triple luck stat
Tattered Cape, cloak: Slightly increase movement & moderately reduce terrain penalties to movement
Rhodium Crystal, necklace: Quadruple damage against fliers & ignore incoporeal
Soaked Mask, helmet: Grants incorporeal to all allies & self & slightly increases defense

Muria's Clients' Weapons
Cleaver I'wai, which was said to have the bite of every animal in the small split at the tip. Causes severe bleeding & massively reduces the defense of whoever was struck by it.
Rapier Tezcalishin, which increased its wielder's speed & let them cast fire as preemptive strikes or while retreating.
Tome Nibelung, which summoned flying, glowing rings of gold that let their user strike with far greater agility.
Staff Skopelos, which had a long range with a moderately powerful healing ability
Shuriken Legion, which could be thrown at unparalleled speed, some saying that the storm of projectiles were impossible to dodge.
Shuriken Astheno, which shattered their target's armor.
Axe Wepel, which could slice through armor & open the way for a skillful strike to finish an opponent in one move.
Dragonstones Jörmun & Fenris, which let those with dragon blood in them temporarily become dragons

Mac's Assorted Arsenal
NisoToaster: Item. Fires 20 million degree Celsius toast, ensuring that it's always crunchy & surrounded in a plasma sphere. But hey, least it's crunchy.
Average Round: Bow. Lets its user fire several thousand arrows in a second. The damage output of each arrow is low, but the temporary stagger from the force that they fly at means that approaching Mac while he's using it will be a difficult endeavor. Super annoying.
Theater-Blessed Microphone: Item. Restores user's health for damage dealt & simultaneously starts playing a random song. Screeches painfully with each use.
Sugary Sugar: Item. Unleashes Mac's sugar-crazed form. Do not use if you want the area to exist.
Masquerade! Masquerade!: Gun. Summons many masked illusions to baffle the enemy. When Mac is discovered, all illusions rush forward to attack the target. Using while people are masked forces them to help participate in the stabbing, although they will forget about it & return to their original conversations & positions.
Les Lettres Perdues: Item. An endless pile of letters that perfectly reenact the historical scene stored in them, ranging from heartbreak, tragedy, & combat to eloquent comedy. Do not drop on the floor.
Business End: Sword. A wrenched-off paper guillotine blade with frightening manipulation over statistics, spreadsheets, and business.

Wasteland Relics
Desolate Pasture: Causes immediate tissue death in the afflicted portion of an organism & drains the target's health.
Storm on the Horizon/Wastelander Bolts: Crossbow & bolts; the former strikes enemies away with storm-like winds & can fire the latter bolts at high velocity & at a high rate of fire. If many shots land in the same area, Storm on the Horizon will summon a localized thunderstorm that lies from the wielder to the aforementioned area.
Grim Javelin: Drains the target's life, obscures their vision, & violently thrashes around when it lands to tear apart the target. Returns to its user after being thrown.

Texts On Beasts
Below is an excerpt of a scroll retrieved from one of Mac's expeditions to an ancient temple complex nestled in the tropical rainforests of the Thryllasian Coastline. Here, he encountered what he called "some bootlegged smile from some Japanese-influenced game[;] I don't bloody know[, although] it was a good singer [...], that's for sure." While exploring the ruins (& being pursued by a horde of various enigmatic, stealthy beasts), he picked up old scrolls drained of their mana & books that were tattered & ruined with some sort of viscous ink-like material.