Mr. Clean

noun

, Informal.

1. an actual or idealized person with an impeccable record, reputation, or image, especially a politician (sometimes used with Miss, Ms., or Mrs. instead of Mr. when referring to a female).
2. such a person regarded as excessively virtuous; goody-goody (sometimes used with Miss, Ms., or Mrs. instead of Mr. when referring to a female).

Word History and Origins

Origin of Mr. Clean¹

First recorded in 1970–75; popularized as the trademark of a liquid cleaner