The Green Lantern Corps is an intergalactic law enforcement agency, charged with maintaining order in the vast universe. Created millennia ago by the Guardians of the Universe, the Corps has been assembled from the finest beings on worlds throughout space, and given extraordinary power. When there are threats to an entire planet or solar system or Galaxy, the Corps sends its elite officers to stop it, armed with glowing "power rings" that can create solid objects from light called "constructs." The only limit to a Green Lantern's power is his, her or its imagination and willpower.

The first "Green Lantern" was a hero in the Golden Age from the 1940s with magical powers, but the series was revamped in 1959 with a more science fiction approach to critical acclaim. Since then, the Corps has been roaming the DC universe, and has thousands of interesting and unusual alien members in its ranks that have become beloved by fans. Given all the members who have lived and died for the Corps, can you keep them all straight? How big a fan are you? Do you think you could name 25 Green Lanterns? CBR is here to test your knowledge of the Emerald Knights.