Editing Sinestro (section)

===Punishment and villainy===
[[File:Sinestro *circa 1963.png|thumb|upright|right|Sinestro, as he was initially depicted prior to him forming his namesake Corps. Art by Gil Kane and Joe Giella]]
For using the power of the Green Lantern to instill fear rather than combat it, the Guardians banish Sinestro to the [[antimatter]] universe, a counterpart to the "real" universe made up of "[[Negative mass|negative matter]]". Sinestro ends up on the antimatter world of [[Qward]], that universe's counterpart of the Guardians' homeworld [[Oa (comics)|Oa]], which is ruled by the Weaponers of Qward, a race of warriors and scientists that bear a fierce hatred of the Guardians and all Green Lanterns. By exiling Sinestro to a world ruled by evil beings who specifically hate Green Lanterns, the Guardians hope to humble him.<ref>{{cite book |last1=Cowsill |first1=Alan |last2=Irvine |first2=Alex |authorlink2=Alex Irvine |last3=Manning |first3=Matthew K. |last4=McAvennie |first4=Michael |last5=Wallace |first5=Daniel |title=DC Comics Year By Year: A Visual Chronicle |date=2019 |publisher=DK Publishing |isbn=978-1-4654-8578-6 |page=97}}</ref> However, Sinestro is quick to seize the opportunity, persuading the Weaponers that he can use his knowledge of the Corps to destroy them for good.

Creating a yellow power ring for Sinestro to use, the Weaponers send him back to the "positive matter" universe to seek revenge. Sinestro quickly becomes the Green Lantern Corps' most powerful nemesis, partially due to a weakness in their power rings that prevent them from directly affecting the color yellow.<ref>{{cite book |last=Rovin |first=Jeff |title=[[The Encyclopedia of Supervillains]] |date=1987 |publisher=Facts on File |isbn=0-8160-1356-X |location=New York |pages=317–318 |author-link=Jeff Rovin}}</ref> Despite this, skilled Green Lanterns like Jordan, Sinestro's most hated enemy, always find ways to defeat him.