backgrounder

Etymology
or

Noun

 * 1)  A briefing or document typically provided prior to a meeting or other event that gives basic details on subjects that are likely to be mentioned.
 * 2) A person employed to draw backgrounds for a comic or cartoon.
 * 3) A cattle farmer or rancher who runs a backgrounding operation.
 * 1) A cattle farmer or rancher who runs a backgrounding operation.
 * 1) A cattle farmer or rancher who runs a backgrounding operation.