One who knowingly allows himself or herself to be used for another's profit; a dupe.
A magician's assistant who pretends to be a member of the audience.
A confederate; a person who is secretly working for the researcher, unknown to the study participant.
A straight man.
A secret informant for police.
To act as a straight man.
One who is willing to participate in, or buy, something.
Are there any takers for helping me clean the garage this weekend?
One who takes something.
A person or thing that takes or receives, often more than he or she gives.