So here's a quick breakdown of all the stuff I'm looking for on your character sheets

Faceclaim: [what your character looks like]

Quote: [Let's see some of your character's personality!]

Name: [Pretty self-explanatory]

Age:

Appearance: [Basically put anything here that isn't specifically shown in the faceclaim]

Personality: [What are the strengths and flaws of your character? How do they respond to the world around them? Make sure you keep it balanced]

Biography: [Give us an intro to your character and the events that led up to them becoming a Host? Was there some major event in their past? These are the things I want to know! Two or three short paragraphs will work, but I'm not expecting a whole book]

Sin: [What is your character's Sin/Demon? What is their backstory and personality? What sort of abilities does your character gain by having this Sin as your Host and what is the backlash?]

Curse: [What sort of Curse did your Sin place on your character? How does it affect them in their day to day life?]

Likes: [What are some things your character likes?.]

Dislikes: [What are some things your character dislikes?.]

Quirks: [What makes your character interesting/unique? Give me some of their more 'unique' traits. This can be more realistic things like being night person, or you can get a little ridiculous with some anime-style tropes if you wish]

Once there was a God of Light, a creator in his own right, he and his beloved ruled over a large frozen continent, bringing warmth and life to the frozen plains and happiness to his living subjects. He was truly content and happy, being known as the most Beautiful and Just God, upon whom one could plea for mercy. When mankind in their explorations came seeking refuge, he willingly lifted the veil and opened his gates for them. Offering them shelter and wisdom to find their own path understanding them to be a young race, still struggling with who they were and where to go from here.
That happiness did not last for long.
Lucifer came calling.
He tried to explain his torment brought onto him and his kin, to have Father’s anger turned against him and all because of mankind. He offered them friendship and a rather singular gift. A wooden box.
He warned him saying that mankind would only bring him misery and that he would come to see them for the parasites they truly were.
But this God of Light dismissed him and his counsel, though graciously he accepted the gift.
And while life continued on relatively peacefully, something was stirring in the hearts of mankind. Anger, Resentment and whilst people had once been free to believe what they wanted there were groups within that demanded loyalty unto their God and whispers of Lucifer’s visit sat ill with them.
Having always been a hands off kind of God, allowing his Lady to soothe the hearts and minds of the people to allow her to garner tribute and prayer. She was known as a Mother of Mercy and Peace.
Rituals and Offerings done to them gave them the power to do miracles. Elaborate sacrificial rites or even simple offerings of Mistletoe and Barley to represent the both of them. Traditions to offer weary travellers a warm bed and belly for the night or fertility rituals such as the Feasts of Starlight and the Great Hunt in honour to them.
For Gods and their power exist through the devotion of their followers, their fervour and numbers. And it was this last thing that he watched being cast aside. The devotion to go down, diminishing their powers and diminished their presence throughout the realm. This only increasing more and more when those distrusting humans started killing his original subjects.
Mankind started slowly a genocide that left the God of Light weaker with each death.
Deciding enough is enough, He called upon all his subjects still loyal and intended to defeat these wicked humans and banishing them from his realm.
This resulted in several battles, each more difficult as with his dwindling numbers his powers were reduced as well, to the point where they reduced his Godhood to such an extent that they turned him and his wife Semi-Mortal.
In these days of desperation Lucifer’s gift came to mind. Lucifer had told him it could swallow entire armies and the most powerful of beings, but that by opening it again all its contents would come spilling out once more.
The Fallen One had stated that Father had used a similar box for the ‘Elder Beings’ and that he had offered the one he had taken upon his leaving heaven as a token of friendship.
With his back against the wall he ignored his wife’s pleas and planned on taking the box with him, but through treachery they were caught unawares.
The humans overwhelmed him and his wife intending to show to all those remaining, that they were false gods. Fakes and just as mortal as they were.
Both chained, they were brought out to their balcony so their subjects might see the truth behind their gods. Awaiting the judgement of these so called ‘Holy Warriors’.
When they decided to cast Lady Pandora from the balcony to leave her hanging for the crows and to display the wickedness behind the Mistletoe, he protested and true to her name Pandora, like the very plant she represented pled for peace.
Her last words were for him.
Before she could even finish them, they slit her throat and pushed her from the balcony. At this point Amon A Thule was overcome by rage and he yanked himself loose from his captors. In a final struggle he gained control over the box and opened it expecting it to swallow them all.
Instead he felt the Void staring back at him as was met by an unknown dark force. He was enveloped by the Fires of ten thousand Suns, before being plunged into the deepest and darkest Cold that he ever experienced. The chains that bound him melted into his skin and the powers contained within that box transformed him into the very thing his heart was filled with and desired. Wrath itself.
In his new form he easily took what was his back.
He smote them all, made them suffer and hunting down their kin. No one would escape the Wrath of the former God of Light. He cast a darkness now everywhere he went and manipulated the weaker of mind, turning them against their kin. He used them to feed the unbridled fires that burned behind his eyes.
He took on a new name, casting aside his old persona and joined Lucifer when he found that he no longer could go back to his old life and a God of Light. Joining as one of his generals ultimately lead to his imprisonment inside a host. But he always had been stubborn and powerful and often tired out the hosts shortening their lifespan as they formed his literal cage and binds. But he knew mankind was weak and would slip up and give into darkness once more allowing him to get out and finally resume his quest for vengeance.

Eira by all accounts had a very normal upbringing, if you discounted the facts that her mother died in childbirth and they had to move around every other year or so. Partly because her father was a diplomat, but mostly because he and her brother were Knights belonging to the Order of Ascalon.
They we often away checking out rumours on different sects and cults stirring in the shadows. They kept a vigilant eye on matters, even performed dangerous missions, as soon as the enemy found them again, they moved. They left nothing to chance, but sometimes even the best preparations cannot safeguard you from everything. The Cult had found them sooner than anticipated and had followed them home. There all hell had broken loose.
That afternoon when Eira got home, she found the house in a state of complete disrepair, thinking first someone had broken in, she called out of her father and brother, all she got as a reply was a low moan. She hurried towards it and found a battlefield. Her brother lay dead on the stone cold cellar floor his eyes wide open and a dozen stab wounds in his chest. There was no movement from him but thankfully her father was still alive. Barely, but he seemed to be struggling to carry on, he was bleeding out and his breathing had become irregular. As he allowed himself to use the wall to lean against he called her towards him. There was no way she was ready for what he was about to do, but there was no more time. She would need to find aid to deal with the burden he would be transferring over to her.
Against his own better judgement, but knowing he had no options as Magnus had been preparing her brother Askr for this specific task as both being Knights of Ascalon, he tried to explain to her quickly what he was about to do.
As Eira pleaded with him to allow her to take him to a hospital or a doctor he refused, saying he couldn’t risk it. Trying to explain to her that was he was about to do was irreversible and would kill him by the end of it, but that she had to be strong and keep her wits about her.
Eira however hard always been kept away, she tried to listen as best she could, but what her father started talking off sounded downright preposterous, yet her father made her swear. She would be the Vessel now, the Cage to contain the demon. She would need to seek aid from others and above all not give any credence to what the demon would tell her.
So desperate Magnus starts the rite that would forever seal Eira’s fate and transfer the demon over to his daughter, explaining to her that under no circumstance must the demon be allowed to gain his freedom again. Not completely realizing what this twisted deal is, she comforts her father in his last moments before he marks her with his own blood, starting the ritual. As soon as the transfer is complete, her father slumps down an empty expression cast upon his face.
Now that she has become the new Host, she is fearful of the cult coming back so she calls up the authorities, to ensure they have some spotlight on them, that way she assumes they’re not likely to try another attack with the law running around the place. Having no idea where to look for potential aid she knows she has to brush up on her knowledge. Thankfully she finds her father’s diary, but whilst reading it, she understands that the hosts who house Wrath do not live long lives.
They are easily manipulated and each time Wrath grows stronger. Her father writes that during the transference unto him they had barely been able to contain it and that the next host should seek out a way to more permanently rid themselves of off it. With practically no allies or knowledge how is she to accomplish this?