avenger
//əˈvɛn.dʒər//
Noun
avengerSingular
avengersPlural
1
A person who takes vengeance or exacts retribution on behalf of themselves or another.
He became an avenger after his family was wronged.
2
One who punishes a wrongdoer or seeks justice for a wrong that has been committed.
He became an avenger after his family was wronged by the corrupt officials.