Story: "Once Upon A Time...!" (22 Pages)

Credits:

John Ostrander (plot)
Len Wein (script)
John Byrne (pencils)
Karl Kesel (inks)
Steve Haynie (letters)
Tom Ziuko (colors)
Mike Gold (edits)

Feature Characters:

Captain Marvel (Billy Batson; first appearance of Captain Marvel in the post-Crisis universe; last in Shazam: the New Beginning #4/Power of Shazam! GN; see Comment)
Changeling (last in Action Comics #584)
Flash III (last in New Teen Titans Vol. 2 #26)
Amanda Waller (first appearance; head of Task Force X; last in flashback in Secret Origins Vol. 2 #14; next in Fury of Firestorm #55)
Colonel Rick Flag (last in flashback in Secret Origins Vol. 2 #14; joins the new Task Force X)

Guest Stars:

Martian Manhunter
Elongated Man
Gypsy
Steel
Vibe
Vixen (all six as the Justice League of America; all six last in Justice League of America #257)
Cosmic Boy (last in flashback in Cosmic Boy #1)
Firestorm (last in Fury of Firestorm Annual #4; appears in Justice League of America #257 in between pages 6 and 21)

Supporting Character:

Jenet Klyburn (last in ???)

Villains:

Darkseid
DeSaad (both last in Crisis on Infinite Earths #12)
G. Gordon Godfrey (last in Shazam: the New Beginning #4; also seen as Glorious Godfrey; see Comment)
Doctor Bedlam (last in Mister Miracle Vol. 1 #21)
Brimstone (first appearance; a fire-creature created by Darkseid)
Macro-Man (first appearance; a specially-created orginic animate, given life by Baron Bedlam; destroyed)
Deadshot (last in Batman #400)

Guest Appearance:

Night Girl (last in Legion of Super-Heroes Vol. 3 #23; behind the scenes; appears next in Cosmic Boy #1)

Comment: Although Captain Marvel's origin was revised in Legends's tie-in Shazam!: The New Beginning this mini-series has since been retconned from current DC Universe chronology. See The Unofficial Power of Shazam! Index for more information.