Green Lantern Week: Alien Antagonists

Sinestro was once a prominent member of the Green Lantern Corps, until it was discovered that he ruled his native planet Korugar-One mercilessly. Stripped of his costume and power, he was exiled to the Anti-Matter Universe... to reappear later as an agent of that universe's Weaponers of Qward, the counterparts to Earth-One's Guardians of Oa.

Wielding a power ring that absorbed the green plasma from the Lantern rings and converting it into yellow energy, Sinestro quickly became the deadliest adversary of Earth's Green Lantern, Hal Jordan. These two would have a long running enmity which would culminate across several universes of existence

Sinestro had a long and storied history of conflicts wherein at one point, Sinestro as an energy form (a punishment that the Guardians inflicted upon him for his continued disobedience) traveled to Earth-Two after assuming the form of cab named Goitrude.

The cab was once owned by Doiby Dickles, partner of that world's resident Green Lantern... Alan Scott. Once regaining his natural form, Sinestro recruited three cons from Earth-One and brought them to Earth-Two, wherein he transformed and multiplied them into a Sinestro Corps to control that universe. Both Alan and Earth-One's Hal Jordan aka Green Lantern defeated the assemblage of evil! These gangsters turned clones labeled themselves the "Evil Green Lanterns", but were a short lived group, with imitation power rings.

These three crooks took the place on Earth-Two of three criminals of that world: Crazy Quilt, Captain Challenge and Gentleman Ghost. All three migrated to Earth-One shortly after the three gangsters left for Earth-Two during the Anti-Matter Man’s invasion of both Earths in 1966. Given their cloaking technology, three rogues were able to escape notice of the Justice League and Justice Society, as those teams sent the other trans-dimensional migrants accidentally transported to the alternate Earth back to their home Earth.

When the two true Green Lanterns brought the Central Power Battery back to Oa where Sinestro had stolen it, along with the villain himself, this left the Earth-Two Sinestro duplicates leaderless. What became of them on Earth-Two, or Korugar-Two, is unknown.