Justice League: The New Frontier, DC Movies Wiki

Justice League: The New Frontier is the first animated film in the Justice League film series. It is based on DC: The New Frontier. The film (set from 1953-1960) begins with an unknown entity explaining how it has witnessed the evolution of life on Earth: Like all things on this hurtling sphere, I emerged from the molten center of creation. But mine has been a unique path. Isolated, I developed attributes beyond those of lesser beings. Then the sphere was struck by a vast celestial stone. Black

Justice League: The New Frontier - Commemorative Edition to hit Blu-ray in October

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Justice League (Justice League: The New Frontier), DC Movies Wiki

Okay, so me and my dad are going to see The Flash, but he hasn't seen Man of Steel or either cut of Justice League. Should he watch those before the movie