Revenge

Revenge is the seeking of justice against a person or group in response to a grievance. It often occurs outside of the law, either because the person does not feel the law will work properly or because the person themselves is outside the law. Revenge is often sought after between rivals.

History
Punisher sought revenge against those who broke the law following the deaths of his family.

Wolverine and Sabretooth often sought revenge against each other.

Magneto sought revenge for the deaths of his parents during the Holocaust and for injustices against mutants.

Doctor Octopus wanted revenge against those who derided his experiments.

Spider-Man tried to get revenge against Green Goblin after he apparently killed Mary Jane Watson.

Ultron wanted revenge against its creator Ant-Man.