stooge
noun /stuːdʒ/
  /stuːdʒ/
- (informal, usually disapproving) a person who is used by somebody to do things that are unpleasant or dishonest受人驱使的人;奴才;走狗 
- a performer in a show whose role is to appear silly so that the other performers can make jokes about him or her(供其他演员作弄打趣的)丑角 
词源early 20th cent.: of unknown origin.