Monsters

Monsters are remnants of the Evil God that was defeated many years ago. They often have magic stones (or Crystals) inside of them.

Monster Threat Level Ranking
Each Monster can be categorized by the level of danger that they pose and a corresponding rank can be given to them. A group of ten increases the threat by one level, and a group of a hundred by two levels.

Fenrir
The Great Wolf Fenrir is an S-Rank magic beast. It perished in the Demon Wolf's Garden, where its magical influence still lingers.Fenrir is the creation of the goddess of the silver moon. By order of the Goddess, he devoured the fragments of the Dark God, and cleansed them of their. To do this, Fenrir was endowed with the ability to appropriate the powers of the opponents he devoured. In the Demon Wolf' Garden, he defeated the first fragment of the Dark God.

Six-Legged Rats
A Six-Legged Rat is a type of animal species. It is an animal rather than a monster, meaning it yields no crystals. In the manga, the species has a crystal.

Crush Boars
Crush Boar is giant pig with a hammer-like snout; height is over two meters. Its alternatively translated as Crash Boar

Iron Ants
(giant ant with mandibles able to crush boulders)

Rock Bisons
(fur as hard as stone)

Giant Bats
They are night creature with Echolocation skill.

Orcs
There orcs are type orcs that we think. Teacher has strong crystal taste of them.

Gourmet Orcs
They are subspecies of Orcs. They too have delicious crystal taste.

High Orcs
They are subspecies of Orcs.

Stone Spiders
(rock-like; has Advanced Poison Fang)

Giant Moles
(carnivorous; has skill Heat Sense)

Paralysis Cat
(has skill Conceal Presence)

Goblin Goblins are a common variety of monster. They are weak and primitive, making them the staple for low-rank adventurers to hunt.

Fiends
Fiends are servants of the Evil God.

Birds
Bird-type monsters do not have the skill Flight because it is a natural feature. However, they can have flight-enhancing skills. Air Current Sight is a staple of bird-type monsters.

Trivia

 * Blast Tortoise is a reference to the Pokemon Blastoise.