Fomorroh

&nbsp The Fomorroh is a creature of the old religon, used to enslave others,

History
The Fomorroh is a creature of the old religon, in the days of the old religon, the high priestest would use it to enslave there enemies.

In her plan to kill Arthur, Morgana summoned a Fomorroh and used on of its heads to enslave Merlin, driving him to kill Arthur.

After several failed attempts, to kill Arthur, Gwen and Giaus managed to catch Merlin, and Giaus removed the Fomorroh and killed it, but a second one grew in its place.

After stopping another attempt to kill Arthur, Giaus paralysed the thing and gave Merlin back his free will, he traveled to Morgana's hut and found the mother beast, after a close battle with Mogarna, he killed it, and Giaus removed the head still left in his neck.

From Morgana's coments about summoning it from the depths, and it not being used to the light, its implied the thing dwells in the spirit world.

Apperance
The Fomorroh resembles a snake, with a fat, short body, and seven heads, it is greyish in colour, and only about half a foot in hight.

Abilities
As a creature of Black magic the Fomorroh is a very dangerous creature, once placed inside of somebody, it takes causes whatever instruction the person is given to become the only thing that they can think about, and it forces them to perform it,

The person in question still remians there memories, but after a short while, there personallity changes, causing them to become rude and hostile to others, and obsesed about performing its mission. As it never occured, it is unclear what would happen if they did complete there mission, however based on the comments by Giaus and Morgana, its implied they would just go and recive another mission.

The creature was also highly resistant, it could it was difficult to kill, even if its head had be cut off, it would just grow another one seconds later, and the disimbodied head would stay alive. It could only be killed if the whole thing was destroyed, by fire for exampled, however if the head was destroyed, another would just grow in its place, even if the head had been removed, another would grow in the persons neck.

While possesed the person would remeber nothing of what they had done, the person could regain control, if the thing was paralysed, but it could only be paralysed for about a day, and the thing could only be removed if it was first paralysed and then cut out with a knife.

The creature could only be killed, if it was all destroyed, any of its disimbodied heads would stop growing back, although its unclear if this act would kill them or not.

Behind the Sceens
Body wise the creature resembles a hydra, from greek mythology, both in the number of heads and idea of them growing back if decapitated, although unlike the hydra, it only grows one head, instead of two.