https://www.thepennedsleuth.com/blog/the-strings

The master of manipulation, the puppet master. Someone who controls those you have no free will, it is immoral, but easy. Suppose you want to control another puppet master, or at least someone who acts of their own accord. It's simple, you manipulate their mind. The mind is what pulls the strings, lifts the arm, and pulls the trigger. It is incredibly difficult to manipulate the manipulative, but in doing so you can make a lot more happen without any repercussions.