Stooge

Noun

 * 1) One who knowingly allows himself or herself to be used for another's profit; a dupe.
 * 2)  A straight man
 * 3) A person who collects secretly information on activities of the enemy

Thesaurus
Charlie McCarthy, Roscius, act, act as foil, actor, actress, adherent, agent, also-ran, ancilla, antagonist, appear, appendage, apple-polisher, appliance, ass-licker, attendant, babe, backscratcher, backslapper, bad guy, barnstorm, barnstormer, boob, booby, bootlick, bootlicker, brown-nose, brownie, buff, cavaliere servente, character, character actor, character man, character woman, child actor, chump, cinch, clawback, come out, contrivance, courtier, creature, credulous person, cringer, cull, dangler, defeatee, dependent, device, disciple, diseur, diseuse, dramatizer, duck, dummy, dupe, easy mark, easy pickings, emote, emotionalize, fall guy, fan, fawner, feeder, feudatory, figurehead, fish, flatterer, flunky, foil, follower, following, fool, footlicker, front, front man, game loser, get top billing, gillie, go-between, gobe-mouches, good loser, good sport, goon, greener, greenhorn, greeny, groveler, gudgeon, gull, handmaid, handmaiden, handshaker, hanger-on, heavy, helot, henchman, histrio, histrion, homager, homme de cour, implement, inferior, ingenue, innocent, instrument, interagent, intermediary, intermediate, intermedium, jackal, juvenile, kowtower, lackey, lay figure, leadpipe cinch, led captain, lever, lickspit, lickspittle, liege, liege man, loser, man, matinee idol, mealymouth, mechanism, mediator, medium, midwife, mime, mimer, mimic, minion, monkey, monologist, mummer, myrmidon, nominal head, organ, pantomime, pantomimist, parasite, partisan, patsy, patter, pawn, peon, perform, pigeon, play, play the lead, playact, playactor, player, plaything, prize sap, protean actor, public, puppet, pursuer, pursuivant, pushover, reciter, register, retainer, sap, saphead, satellite, schlemiel, sectary, serf, servant, shadow, sitting duck, sketch, slave, soubrette, spaniel, sport, stage performer, stage player, star, steal the show, straight man, stroller, strolling player, subordinate, successor, suck, sucker, supporter, sycophant, tagtail, tail, the vanquished, theatrical, thespian, thug, timeserver, toad, toady, tool, toy, trainbearer, tread the boards, troupe, trouper, truckler, trusting soul, tufthunter, underdog, underling, understrapper, upstage, utility man, vassal, vehicle, victim, villain, votary, ward heeler, yeoman, yes-man

Translations

 * German: Handlanger, Handlangerin, Strohmann, Strohfrau
 * Russian: марионетка, подпевала


 * Turkish: alet olan kimse, yaltakçı, yardakçı


 * German: Stichwortgeber, Stichwortgeberin


 * Turkish: komedyen yardakçısı, şamaroğlanı


 * Arabic: جاسوس
 * German: Spion, Spionin


 * Russian: осведомитель, осведомительница, шпион, шпионка
 * Turkish: casus