Demons

Origin
The origins of the first Demon is unknown, but Demons are usually the result of dark magic or making a deal (contract) with another Demon.

Demons May ascend to the afterlife if they complete a contract with another being, passing on their Demonic powers to another soul.

Characteristics
Demons are magically capable and usually conduct their will through mortals who sign contracts to either gain magical power or materialistic things such as gold. This will usually require something from the mortal in return which is dependant on what the demon requests, Demons are the overseers of the contract and judge how it is to be carried out and what each individual sentence means.

Magic
Demonic magic is referred to as “Contractual magic” as it is bound to the contractual agreement they make with mortals.