Dentist the Menace

https://en.wikipedia.org/wiki/Painless_Parker

He legally changed his first name to "Painless" when he was accused of breaking a false advertisement law by claiming that his dentistry was truly painless.[1][2] When business thrived, he hired assistants and established a chain dentistry business.[2] In the end, Parker ran 28 West Coast dental offices, employing over 70 dentists, and grossing $3 million per year.