manipulator

/M AH0 N IH1 P Y AH0 L EY0 T ER0/
noun
  1. 1

    Agent noun of manipulate; one who manipulates.

  2. 2

    A device which can be used to move, arrange or operate something.

  3. 3

    A puppeteer, especially one controlling marionettes.

Source: https://en.wiktionary.org/wiki/manipulator