Magic. Ethorians was born of magic, much like the dragons who came from the fire itself. Ethorians are children of the Snake Goddess, who seduced a mortal in order to procreate the first snakes of the mortal race. Erin was born last, though she carried all her mother's beauty and seduction. This was the very reason why her brothers fought one another in order to bed their sister, in which even forged the 'War of the Five Brothers' but Erin had always loved her eldest and only sister in comparison to her brothers. For Erin, her brothers were mere split seconds of pleasure, but Rheyna, she was Erin's one true love. Rheyna and Erin were the inseparable sisters who soon became intimate lovers and Queens of House Ethoria. But, as they were both born as females, they were not able to produce any heirs, in which their brothers was used for. However, all of Erin's daughters were never acknowledged, as House Ethoria was known to be the only House who only had women ruling them. Erin knew it will only place Rheyna in a tight position and she loved her sister so much that she was ready to give up her daughters, but Rheyna never wanted her to do that, instead, they raised the three bastard children together in their reign.

House Ethoria is known for being one of the most brutal and unforgiving Houses amongst the five families. It is said that when Erin had any enemies, they were more than likely to never see the light of day at all. The Ethorians also holds the largest army amongst the five, it is said and later proven that Ethorians boast of 100,000 soldiers in total or more. Many of these soldiers were Erin's bastard children by all her five brothers and with this number of soldiers came to the great numbers of children who took pride in having olive skin, dark coloured hair and dark brown eyes. Also, they were called, the Snake Gods, House Ethoria was rumoured to have the power of shape-shifting into any form they want, albeit, they would lose this power as soon the sun meets the moon.  
 

But, when Serafina was born, the silver-haired beauty whose skin can rival the white clouds of the South, Rheyna and Erin's rule began to suffer. House Girelon, as the traitors called it, left House Ethoria to worship and pledge their allegiance to Serafina and Erin haunted them for it. In her surprise, she had found her brother Ravenus as one of the traitors. This sparked Erin's killing spree called the 'Hanging Tree' in which she hanged all the traitors she could find, including Ravenus.

 

After the Millennium incestuous bloodline of House Ethoria, the Immortals decided to curse Erin, her children, and her living siblings to turn into snakes when the sun meets the moon. This curse made them weak against their opponents, not only that, Erin found herself being the center of the target of House Leonhart and Girelon for killing all the people she hung in the Ivy Forest. But, when Arwyn Wolfstone called upon their help to destroy House Leonhart, Erin couldn't be more grateful to help a loyal friend in the act for more blood. It is said but was never proven that Erin placed her poison onto Arwyn's sword when he had slain Lanier, which meant that Lanier's death was not pretty as he looks.