manipulator
noun [ C ] mainly disapproving uk/məˈnɪp.jə.leɪ.tər/ us/məˈnɪp.jə.leɪ.t̬ɚ/
操纵者（出于个人利益操纵别人的人，常指通过不公平或不诚信的方式）
a person who controls people to their own advantage, often unfairly or dishonestly
She was, said the judge, a ruthless and scheming manipulator. 法官说她是个无情的阴谋操纵家。