Demon

Badass race. Due to their inability to navigate water without dying quickly, it is recommended to build a Boat as quickly as possible to mitigate deaths.

Race Skill

 * Demon Scythes

Press Q (default) to activate. Creates magical scythes similar to those of the Demon Scythe that fly out to attack.

Begins by casting 1 scythe and increases by 1 per 20 base levels. Also, the speed of scythes are increased by 1 per 20 base levels. There is a short cooldown, but no mana cost.

Wings

The demon has a set of wings as a starting bonus. Free wings at the beginning of the game make this class very desirable.

Change Log:

as of NTerraria v5.38 demons take water damage and lava damage

Bugs:

Some, not all, demon characters will not be able to use any other type of wings other than their starting wings, this should be solved soon.

Credits
Horn sprites made by ZenTheBest. The wings are the default Demon Wings.