Eva-Beatrice

Eva-Beatrice is a a Villain of the anime Umineko no naku koro ni (W''hen the Seagulls Cry). ''She was the main Antagonist of the 3rd story arc Banquet of the Golden Witch. She was actually Eva Ushiromiya's negative emotions and deepest desires. The Ushiromiya family held a family conference in the island of Rokkenjima until they are stranded in the island by a storm. To decide who will be the family head they will have to solve an Epitaph (Riddle) made by the current family head Kinzo Ushiromiya (Eva's Dad).Eva-Beatrice became a living being after the Golden Witch Beatrice passed her name and her magical powers to Eva-Beatrice.

Background
Eva-Beatrice first appeared to a teenage Eva Ushiromiya who was in a garden, mad at her father and brother, Eva-Beatrice encouraged her to be better than her brother and impress her father. Years after that after Eva solved the Epitaph, which would lead her to her father's gold, she technically becomes the Head of the Ushiromiya Family. Also Eva's younger sister Rosa Ushiromiya almost found the gold but Eva was actually the first one. Later Eva and Rosa dicussed about sharing the gold, but deep down inside, Eva wanted all the gold to herself. Beatrice the Golden Witch appeared to Eva-Beatrice and passed onto her, the Endless Magic turning Eva-Beatrice into a witch herself.

The Black Witch
In order for Eva-Beatrice to gain full power, she has to perform a ritual which involves murdering people which is instructed in the Epitaph. Beatrice has already done the First Twilight (which involves killing 6 people), so Eva-Beatrice has to complete the ritual. According to the Epitaph, Eva-Beatrice has to kill 2 people who are close. So as she was going to kill her sister Rosa Ushiromiya and her niece Maria Ushiromiya (Rosa's daughter) she realized that she could kill a person and ressurect them so she could kill them again.