Marionette operator (9)
I believe the answer is:
puppeteer
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">marionette operator</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for puppeteer that I've seen before include "Marionette operator" , "one holding the strings?" , "One controlling the strings" , "who's manipulative" , "Fellow holding up special person" .)