Free The Shadowhunter's Codex by Cassandra Clare, Joshua Lewis

only by angels. This great transgression caused him to fall and become a demon. The irony of a demon being responsible for giving humanity the knowledge necessary to fight against demons is not lost on the Nephilim; we assume that it is not lost on Azazel himself either. As the Book of Enoch has it, “And the whole earth has been corrupted by the works that were taught by Azazel. To him ascribe all sin.”

HUNGER
The demon known as Hunger is an obese devil-like humanoid figure covered in hard, bony scales and a variety of chomping fang-lined mouths all over his body. Hunger is made to devour everything he encounters, usually in as messy and grotesque a fashion as possible.
MARBAS
A blue demon, half again the size of a man, covered in overlapping blue scales, with a long yellowish tail with a stinger on the end. Scarlet eyes, lizard’s features, and a flat snakelike snout.
MRS. DARK
A large creature of hard, stonelike skin, apparently female (although what gender means in the realm of demons is unclear). She is horned, with twisted limbs and clawed hands. She can also be identified by her glowing yellow eyes and her triple row of mouths lined with greenish fangs. She is of the Eidolon (see separate entry ).
II. SOME COMMON DEMONS
BEHEMOTH
The Behemoth is a formless monstrosity of a demon. It is roughly oblong and could be described as sluglike in its movements, but with less coherence of shape. It is large, much larger than a human, and slimy. Double rows of teeth line the length of its body. The Behemoth devours everything in its path, including people.

DRAGON
Dragon demons are the closest thing in the modern world to the ancient myths of dragons. They are large, flying, fire-breathing lizards, and are quite intelligent. They come in a variety of shapes and colors. They are formidable foes; luckily, Shadowhunters are likely to never encounter them, since they are almost extinct. They are not to be confused with Vetis demons, which are like dragons but are not Dragons.
DREVAK
Shadowhunters know well the appearance of Drevaks, weak demons in frequent use by Greater Demons or evil warlocks as spies or messengers. They are smooth, white, and larval, resembling a giant version of a mundane grub or maggot. They are blind and do their tracking by scent.
Their shapelessness and lack of intelligence does not mean they are not dangerous; instead of teeth their mouths contain poisonous spines, which can be very dangerous if they break off and stick in the skin of a victim. Normal treatments for demon venom apply here.

DU’SIEN
The Du’sien is one of the lesser-known shape-shifting, or Eidolon, demon species (see below). Its true appearance is abstract, like an irregular blob of greenish-gray jelly with a small glowing black core. They cannot mimic other creatures with the detail that many Eidolon can, and their command of human language is weak. They are thus often found disguised as “generic humans,” members of a crowd, rather than impersonating specific individuals.
EIDOLON
“Eidolon” is not the name for a specific species of demon. Rather, it is a comprehensive term for a variety of shape-shifting demon species. Shape-shifting demons come in many different original shapes, and many different sizes and strengths. Since there are dozens of these species, Shadowhunters typically use the term “Eidolon” to refer to shape-shifting demons in general. It is, in other words, usually more useful to note a demon’s shape-shifting ability than the minor details of their original form.
Eidolon demons make up the majority of demon parents of warlocks, for obvious reasons. (See the “Warlocks” section of Part II of this Bestiaire for an explanation if the reasons are not obvious to you.)
In addition to the danger posed by their nearly perfect ability to camouflage themselves, Eidolon also have a marked advantage over other demon species: When shifted into the form of a human, they are somewhat protected from the destructive