What is scullywag?

Answer 1

Its scalawag. It has become a general slang term for a bad person, but originally it meant a white Southerner working for or supporting the federal (northern) government during the Reconstruction.

Answer 2

"Scallywag" is a term that originated in the 18th century and is used to describe a dishonest or unscrupulous person, especially a rogue or rascal. It is often used in a playful or humorous way to describe someone who is mischievous or cunning.