DC Comics and Green Lantern #6 Spoilers follows.
Which New God…
…Turns It All Upside Down?!
The opening story includes Sinestro indicating…
…he nor the Sinestro Corps / Yellow Lantern Corps did not destroy the Green Lantern Corps’ central power battery.
Sinestro would also been open to Jo Mullein becoming a Yellow Lantern when her Green Lantern ring flickers out of power.
In the back-up story, John Stewart is ready to lead a mission, but…
…again sees a stranger who reveals himself as Lonar…
…a New Gods “watcher” who is here to see John Stewart succeed or spectacularly fail with the universe in the balance.
Lonar’s DC Encyclopedia bio is above; not really Who’s Who style, but it will do.