Agent
An agent acts in the place of another, using delegated authority. This implies that all power held by an agent must be granted.
One who acts for or in place of another by authority from him; a substitute, a deputy, appointed by principal with power to do the things which principal may do. Stephenson v. Golden, 279 Mich. 710, 276 N.W. 849.
Definition of Agent – Black’s Law Dictionary, 4th Edition Page 85

