Vengeful

Vengeful Heroes or Seekers of Vengeance, are protagonists/heroes who commit their actions under the premise of vengeance (also called retribution or revenge) whether it be for a wrong committed against them or their people/race. Similar to a Nemesis, but with a few slight differences: First of all, a Seeker of Vengeance is a specific type of Nemesis, being concerned only with revenge while a Nemesis encompasses all types of motivations; also, a Nemesis is an enemy who is created through the villain's own actions, but a Seeker of Vengeance might already be an enemy to the villains and is seeking revenge for a perceived wrong dealt to them by the villain.