Nephilim

Nephilim (Plural Nephilim) is a derogatory term used primarily to describe magic-wielding mercenaries, used by common folk and peasants, as well as mostly everyone who isn't them. They are given this nickname to refer to them as half-demons, alluding to the fact that the majority of times that said mercenaries are active, they destroy everything in sight, whether purposeful or accidental.

There are many Guilds that could be classified under this term, the most famous being as below.
 * 1) The Yggdrasil Mercenary Service (YMS)
 * 2) Säermund
 * 3) The Hydra Company
 * 4) Angel's Fist