Charlie McCarthy, agent, ancilla, appeaser, appliance, arbiter, arbitrator, broker, conciliator, connection, contact, contrivance, creature, deputy, device, distributor, dummy, dupe, entrepreneur, front, front man, go-between, handmaid, handmaiden, implement, instrument, interagent, interceder, intercessor, intermediary, intermediate, intermediate agent, intermediator, intermedium, internuncio, interpleader, intervener, interventionist, interventor, jobber, judge, lever, liaison, link, mechanism, mediary, medium, middleman, midwife, minion, moderator, mouthpiece, negotiant, negotiator, negotiatress, negotiatrix, ombudsman, organ, pawn, peacemaker, plaything, puppet, referee, servant, slave, spokesman, spokeswoman, stooge, tie, tool, toy, troubleshooter, umpire, vehicle, wholesaler