Aradia (enemy/highly dangerous)
Appearing as a young child, no older than 14 years old Aradia was responsible for the abducting and corruption of Elithas in the year 2999. Calanodel ran into her sometime around 2965-2969 near Nar'Talas Ado Iilor (Eternally Peaceful place/land or simply known as North Keep in the human tongue) when she had taken an infant Half-Elf who later became known as Samarite. Back then Aradia had the form of an undead creature which led the Heroes speculating that she was a type of lich using young children to preserve her immortality.
Aradia revealed to have some sort of connection with the Demon Azrael but to what extent it's currently unclear. She claimed however to be his lover