For Great Justice

"The never-ending battle for truth, justice, and the American way."

- Superman

"Burning Justice"

- Transformers

"Guardian of Love and Justice"

- Sailor Moon

It is a concept that heroes in their story show as a motivation to fight against evil. It also is a concept that drives the hero or heroes to fight against those that cause acts of suffering, despair, and injustice. The motivations can come from the desire to do good, end tragedies, and protect values or beliefs.

Examples
In the Anime series Sailor Moon, Sailor Moon and her friends fight against all evils for the sake of justice.

In Gundam Seed, Athrun Zala is fighting for a fair and correct justice for the universe.

Batman and the Flash in their own series or crossovers are concerned with criminal justice.

In Star Wars Obi-Wan, tells Luke Skywalker that the Jedi are the "guardians of peace and justice."

In nearly all of the Transformers series, the Autobots fight for truth, freedom, peace, and justice against the Decepticons.

In the anime and manga series Fairy Tail, Erza Scarlett has a strong sense of justice and is disgusted towards any injustice that happens to her or her friends.

In all the Digimon Series, Leomon and his alternate forms has a strong sense of justice and fights against any foe that causes injustice towards others.

In Death Note, Light Yagami uses the Death Note to rid the world of criminals so as to make the world a better place despite his own hypocrisy and desire to be God.