The Light Novel series is the source material for the adaptation of the Anime and Manga series. The information and terminology on the article will be based on the source material rather than the adaptions.
Feybeasts (魔獣, majuu) are beasts which are able to wield mana. Upon their death, the mana within their bodies hardens into feystones. If the feystone is touched in any way, like being hit or scraped by a knife, any body parts still connected to the stone will melt away, making butchering a feybeast for meat work that requires great care.
Living creatures that are unable to wield mana are referred to as animals instead.
List of Feybeast Species
A bahelm (バッヘルム, Bahherum) looks like a winged cow with several horns on its head, of which one is long and sharp like a unicorn's horn and the other ones are big, long and sprawling like an elk's horns. The legs look muscular with sharp claws protruding from its paws, reminding one of something like a tiger or lion.
A bataffe (バートアッフェ, Baatoaffe) is a weak monkey-like feybeast that is able to swim. They are usually encountered in groups of around thirty and make shrieking noises "Scree! Scree!". To intimidate their opponents, they show their teeth.
An eifinte (アイフィント, Aifinto) is a tree born and nimble feybeast that is described as a squirrel the size of a cat with two horns protruding from its head.
Spoiler from Part 4 Volume 8
Eifinte are weak enough that occasionally even commoners hunt them.
A fetze (フェルツェ, Ferutse) emerges after a zantze grows and evolves.
A goltze (ゴルツェ, Gorutse) is a strong feybeast and the last evolution stage of a zantze. It is much taller than a zantze, reaching heights of a two-story-tall building.
A Grun (グリュン, Guryun) is a feybeast that has a shape similar to Earth's red panda, but with a bony torso and a striped pelt of black and dark-green hues.
They generally have vicious tempers, but become particularly dangerous in the spring, when they emerge hungry and irritable from their nests after raising their young. It is also expected to encounter Gruns in pairs during that season, since they tend to stay close to their partners.
Gruns are capable of releasing a strong and foul odor from their mouth that Rozemyne compared to that of Miso. It is intense enough that some nobles are nearly incapacitated from being exposed to it, though those who had experienced the stench of Ehrenfest's lower city prior to its remodeling appear to be barely affected, if at all.
Gruns are capable of exceptionally fast movement and can charge their targets with a speed too fast for non-enhanced human eyes to follow .
A Hundertteilung is a feybeast native to Ahrensbach that lives near the ocean's coast. It looks like an amorphous blob loosely resembling a large snake, making it rather difficult to make out where the head is at a glance. Much like the Talfrosch, the Hundertteilung will split into many smaller fragments upon being attacked and try to re-merge soon after and only its smallest fragments can actually be killed without further splitting apart. Also like the talfrosch, it is a comparatively weak feybeast, but due to splitting and re-merging can be quite time-consuming to deal with.
Kieferdeckes (キーファデックス, Kiifadekkusu) are a species of feybeast native to Haldenzel. They are among the weaker feybeasts, but live in large groups that scatter upon spotting a predator, which makes them hard to exterminate. They lay their eggs from late spring and throughout the entire summer, and can cause great damage to the harvest if not dealt with.
Riesefalkes (リーズファルケ, Riizufaruke) are large, fierce birds of prey with sharp claws that nest in the caves of Mount Lohenberg in the province of Griebel. There, they lay their eggs in natural hot springs, where they absorb the surrounding fire mana to grow. While the mother-bird does not breed the eggs, it will still stay close most of the time and only leave for short periods to hunt for food. If one wishes to steal eggs without wanting to confront the mother, one needs to wait for this short window.
Their eggs are valuable materials with a large mana capacity and purity in fire mana, but taking too many without replacing them with some other means to absorb the mana, like empty feystones, will allow too much mana to gather, which angers the God of Fire Leidenschaft and might lead to the volcano erupting. If a mana-wielder dyes a riesefalke egg with their mana, it will turn into a feystone.
Schnefelds (シュネーフェールト, Shuneferuto) look like small Hippos made up of rock. They are relatively docile and have resilient hides, making them popular candidates as treasure beasts for treasure-stealing ditter.
A schnesturm (シュネティルム, Shunetirumu) is a feybeast resembling a white saber-tooth. It is a winter feybeast and a possible Lord of Winter.
A shumil (シュミル, Shumiru) is a weak feybeast looking like a rabbit.
A spinne (シュピンネ, Shupinne) is a feybeast whose thread is an expensive sturdy material. The thread is not easy to handle.
A talfrosch (タルクロッシュ, Tarukurosshu) is a toad-like feybeast of varying size. They eat each other to grow and split again into multiple smaller specimens when injured sufficiently. Only when they have split into their smallest size can the individual small toads be killed. It has a stretchy and springy tongue to grab foes from a distance to be swallowed whole. At their largest they are able to swallow a Human on a hose-sized highbeast whole.
They are generally seen as merely a nuisance rather than a true threat, since they never wander into inhabited areas and are easily dealt with by trained knights. They are loathed due to their gross appearance however, particularly by female knights.
A ternisbefallen (ターニスベファレン, Taanisubefaren) is a feybeast that is similar in appearance to a dog, except that it has several eyes on its forehead, in addition to the pair in the same position as a regular dog's. It's eyes are usually red, but will change to a rainbow of colours when it attacks and the fur is black. A Ternisbefallen can move its eyes independent of each other, enabling it to keep track of as many foes as it has eyes.
Much like a trombe, it absorbs mana to grow stronger and can only be reliably defeated with weapons that have the God of Darkness's blessing applied to them. Any other mana-based attack will only make the beast larger and more powerful. The size of the beast also depends on how much mana it has. They start off at the size of a regular dog's puppies and, unless supplied with unusually large amounts of mana, will grow to the height where its head is level with an adult human over the course of about six years.
It is constantly salivating and everything touched by its saliva is drained of its mana and turned into black sludge, leaving the land behind drained and barren unless healed, much like a trombe. And much like the feyplant, a Ternisbefallen is considered a serious enough threat that it falls solely to the Knight's Orders to hunt them down, except that the beast being mobile makes it an even greater threat than a trombe, which is locked in place.
The creature is native to the territory of the duchy Werkerstock.
The mana the creature absorbs is stored within the eyes on its forehead, making them particularly valuable ingredient.
A warf (ボルフェ, Borufe) is used in the game of warf. When struck, it curls up, comparable to an armadillo or a pill bug. Their hides are very tough and can easily withstand a large amount of blunt force.
So far very little is known about the Winfalke except that it's hide is a very high-grade and valuable ingredient. As suggested by the skin's red colour, it is rich in earth-mana, but not entirely pure. Considering that some of the skin was in the possession of Heisshitze it is quite likely that this feybeast is native to Dunkelfelger.
A zantze (ザンツェ, Zantse) is a cat-like feybeast which is about knee-high and not particularly strong. It evolves through absorbing mana, by eating ruelles or other feybeasts. The next evolution is called fetze.
Spoiler from Part 4 Volume 8
Zantze are weak enough that even commoners occasionally hunt them.
Feybeasts from spoiler content
Spoiler from Part 4 Volume 8
Currently the actual name of this Ahrensbach feyfish isn't known. In appearance it is similar to Earth's flounders, except that it has multiple eyes on it's back. Despite being a feybeast, this fish is harmless enough that even commoners can deal with it without too much trouble. It is used as a source of food.
A Meerschlange is a feyfish species indigenous to Ahrensbach. It grow to about one meter in length and looks like an eel covered in eyes. It is harmless enough that even commoner cooks can handle it safely, albeit dealing with the eyes can be difficult for them.
A Regisch is a species of feyfish indigenous to Ahrensbach. They are about 30 cm in length and covered in very hard scales that reflect light in all the colours of the rainbow. The scales become harder the more mana the fish contains, making them near impervious to knives. However once the scales reach mana saturation, they will transform into tear-shapes feystones of a bit over 5 cm length, retaining their rainbow colouring and containing all seven elements. These stones are quite valuable. Once the scales have transformed into feystones, they can be torn off with little effort. It is currently unknown whether dying a Regisch in mana to the point of having the scales transform requires the mana-wielder to have all seven attributes as well, or if this only affects the quality of the resulting stones.
Once a regisch is thus descaled, it's meat can be used as food.
A Sprasch is a species of feyfish indigenous to Ahrensbach. It has roughly the size and shape of a sardine. To turn it into food it is put into a strong kettle with some meerschlange meat and then covered with lid, held in place by multiple people. Inside the pot the Sparsch will react violently with the meerschlange meat and explodes. Once the explosions stop, an edible fish-paste is left behind in the container.
A Taunadel is a species of feyfish from Ahrensbach. It looks like something between a yellow urchin with a tail and a puffer fish and is covered in poisonous spikes. When perceiving a threat, the taunadel's body becomes longer and thinner. When the tips of the spikes turn purple, it is a sign that the fish is preparing to attack. It does so by shooting out it's spikes. A way to deal with this dangerous feybeast is to surround it with shields that are able to reflect attacks - like the getilgt transformation of a Schtappe - and thus hit the taunadel with it's own spikes. After the fish has shot off all it's spikes it's safe to handle. The spikes are valuable alchemical ingredients. It is currently unknown whether the meat of a taunadel is edible and whether being hit by it's own poison spikes changes this.
Lord of Winter
see Lord of Winter
Spoiler from Part 4 Volume 8