Yellow Lanterns
Species: Various
Enemies: Green Lanterns
Yellow Lanterns are often villains, as the center of their power is fear. If you can make others fear you or your actions, you’re worthy of a yellow ring. While a lot of this power comes from Parallax, one of the more powerful galactic characters in its own right, this ring is mostly associated with Sinestro. He is a former Green Lantern who was likely the best of them all during his time. At one point, he found the Guardians to be weak and decided to erase Guy Gardner (Earth Lantern) from history.
He is stopped by Booster Gold from the future, who traveled back in time to prevent this. To convince him, he says there is a yellow legion of superheroes that were called “The Sinestro Corps.” Sinestro then went rogue, resulting in the Guardians banishing him to the antimatter universe. Eventually, he is even trapped in the Central Power Battery itself. Yet he then emerges with the yellow ring using fear to power it. He has all the same powers as Green Lanterns, but he can be as selfish as he wants. The Sinestro Corps. become the biggest enemy to the Green Lanterns.