Ilya Sokoloff (イリヤソコロフ)
A sadist turned contractor that used to brutally murder women. Ironically, his power is the ability to manipulate his target's brain to release a chemical that results in their own euthanasia.
Darker than Black: Ryuusei no Gemini
Supporting
Ueda, Yuuji
Bevins, Christopher
Shin, Yong Wu