puppeteer -
Someone who is manipulative and able to get others to do what they want in a puppet-like manner.
Wikipedia
A puppeteer is a person who manipulates an inanimate object—a puppet—in real time to create the illusion of life. The puppeteer may be visible to or hidden from the audience. A puppeteer can operate a puppet indirectly by the use of strings, rods, wires, electronics or directly by his or her own hands placed inside the puppet or holding it externally.