Story: "The Sinestro Corps War, Part 10: Hammer to Fall" (22 Pages)

Credits:

Peter J. Tomasi (plot, script)
Patrick Gleason and Jamal Igle (pencils)
Prentis Rollins and Jerry Ordway (inks)
Guy Major (colors)
Steve Wands (letters)
Adam Schlagman (assistant edits)
Eddie Berganza (edits)

Feature Characters:

Ion III (also in flashback preceding issue #12)
Green Lantern (Guy Gardner)
Green Lantern (John Stewart; both in between Green Lantern Vol. 4 #24 and #25)

Supporting Characters:

Guardians of the Universe (next in Green Lantern Vol. 4 #25)

Villains:

Superman-Prime (last in Sinestro Corps Special Presents: Superman-Prime #1; next in Green Lantern Vol. 4 #25)
Anti-Monitor (next in Green Lantern Vol. 4 #25)

Other Characters:

Tessog (first appearance; an alien; dies in flashback)
Diro Yat (Sodam Yat's father)
Cara Yat (Sodam Yat's mother; first appearance of both; both in flashback preceding issue #33)