Succubi are female demons despised more than the average demon. Their innate gifts of shape-shifting and illusion allow them to infiltrate society, creating as much chaos for their own amusement. (Though instances of Succubi to impersonate anything different than particulary attractive females are few and far between.)
Succubi also possess the means to cloud a person's mind, making them to do as the demoness wills. This control is so great they can send men to die for them in battle.