Vigilante (concept)

a Vigilante is a person who takes the law into their own hands, believing the police and system are unable to bring criminals to justice, not all vigilantes are fighting for justice, some of them do it out of personal revenge.

Known Vigilantes

 * Oliver Queen Secretly Known as Arrow
 * Helena Bertinelli Known as The Huntress
 * Malcolm Merlyn Secretly Known as The Dark Archer
 * Joseph Falk Known as The Savior