The Darkness, often called by her other name Amara, is a supremely powerful primordial entity who has existed since the beginning of time alongside her brother, God. and is the only being more powerful than him. Sometime later, her brother God created the Archangels to fight a terrible war against her. since she was too strong for him to kill. God sealed Amara away with the help of the Archangels by using the Mark of Cain as both a lock and key. God revealed that he couldn't kill her even in her weakened state and she needed to exist with himself so reality would not be destroyed Whilst the Archangels battled her and thus knew of her existence, she is so ancient and mysterious that the Demons and even the Angels, did not believe she existed. However, Metatron knew about her and who she was, as he was God's scribe. Both Heaven and Hell thought it to be a "myth" or "scary bedtime story", told to keep others in line.[6]

When Rowena used a spell from the Book of the Damned in order to free Dean of the Mark (which he gained from Cain to kill Abaddon and had been bearing it since), the Darkness was unleashed once again.[3] While on Earth, The Darkness has taken the body of a female baby, Amara. Since regaining her power by consuming human and demonic souls, and, in one case, an angel's grace, she matured and grew into a young woman in just a few months. As a young woman, she developed a romantic attraction to Dean.

With Dean's help, the Darkness reconciled with her brother and departed the Earth with him

Over two years later, the Darkness returned to Earth and was visited by her brother. She sensed that he was wounded and weakened, but she ultimately refused to help him, effectively leaving God trapped on Earth. Upon being approached by the Winchesters, she initially refused to take their side against her brother but changed her mind to protect God's creation. After learning that Dean betrayed her, Amara has brown hair and white skin and brown eyes and a black dress and she is sitting on a beach