The Atom, Sandy the Golden Boy, Starman, the Wizard, Extant, Hourman (Rex), Red Tornado, Batman, Zatanna, Superman (Kal-El), Hawkman, Dr. Fate (the original), Flash (Barry Allen) & Green Lantern (Hal Jordan) appear in flashback.
John Stewart, Hal Jordan, the Green Lantern Corps, Jakeem Thunder, Terry Sloane and the Earth-2 versions of the Kents, Solomon Grundy, Lois Lane, Wonder Woman, Batman, Atom, Green Lantern, Hourman, Starman, Wildcat, Sandman, Dr. Fate, Hawkman, Mr. Terrific, Dr. Mid-Nite & the Spectre appear in flashback.