hider

Example:The finder of the hidden treasure was rewarded with a large sum of money.

Definition:A person who seeks out or uncovers information or objects

Example:The revealer of the politician's scandals brought down his career.

Definition:A person who makes information public, often by revealing something hidden

Example:The exposer of the corruption was a whistleblower who helped the authorities.

Definition:A person who discloses or brings to light previously unknown or hidden information