Fey

Fey are an entirely alien and incomprehensible species of creatures, who take on deceptively humanoid forms to aid in tricking those around them to the benefit of the fey. Fey are bound by several rules due to their very nature, however that is not to say they are safe, as these rules often end up being the ultimate downfall of the unfortunate souls who encounter fey. Some rules vary but fey are never capable of lying, and are always severely impeded by iron and other raw metals. 
Above the Fey sit the two courts the seleighe and the unseleighe, made up by a variety of Feylord who rule over the The Feywild and it's denizens.
There are many types of fey ranging from satyrs to dryads to blink dogs, all of which come under the broad banner of fey.