stooge

The partner in a comedy team who feeds lines to the other comedian; a straight man.

One who allows oneself to be used for another’s profit or advantage; a puppet.

A stool pigeon.

To be a stooge or behave like one.

One who knowingly allows himself or herself to be used for another’s profit; a dupe.

A straight man

A secret informant for police.

a person of unquestioning obedience

a victim of ridicule or pranks

act as a stooge, in a compliant or subordinate manner