Story: "Underworld Unleashed" (38 Pages)

Credits:

Mark Waid (plot, script)
Howard Porter (pencils)
Dan Green (inks)
Chris Eliopoulos (letters)
Rick Taylor (colors)
Heroic Age (color seperations)
Brian Augustyn (edits)

Feature Character:

Trickster (last in Outsiders Vol. 2 #9)

Villains:

Neron (first appearance; a demon; last in flashback in Superman: The Man of Tomorrow #3; appears in Flash Vol. 2 #107 between panels)
Lex Luthor
Joker
Doctor Polaris
Abra Kadabra
Circe (all five last in flashback in Superman: The Man of Tomorrow #3)
Captain Boomerang (last in Superboy Vol. 3 #15)
Captain Cold
Heat Wave (both last in Justice League Quarterly #2)
Weather Wizard (last in Flash Annual #5; all four die; next in Flash Vol. 2 #123)
Mirror Master III (last in Flash Vol. 2 #105; dies; next in Flash Vol. 2 #121)
Shrapnel (last in Outsiders Vol. 2 #9; next in ???)
Killer Frost II (last in ???; next in Superboy Vol. 3 #22)
Deadshot (last in ???; next in Justice League America #105)
Ghost (last in ???; next in ???)
Punch II (last in ???; next in ???)
Jewelee (last in ???; next in ???)
Dr. Alchemy (last in ???; next in ???)
Riddler (last in ???; next in ???)
Poison Ivy (last in ???; next in ???)
Rainbow Raider (last in ???; next in ???)
Atomic Skull II (in betwen Ray #18 and #19)
Blackguard (last in Green Lantern Vol. 3 #52; behind the scenes; next in Guy Gardner: Warrior #36)
Cheetah (last in ???)
Earthworm (last in ???; both in Guy Gardner: Warrior #36)
Blockbuster II (next in Impulse #8)
Copperhead (last in Superboy Vol. 3 #12; next in Damage#18)
Dr. Phosphorus (last in ???; next in Starman Vol. 2 #13)
Major Disaster (last in ???; next in Aquaman Vol. 5 #14)
Metallo (last in Action Comics #710; next in Steel #21)
Mr. Freeze (last in ???; behind the scenes; next in Green Lantern Vol. 3 #68)
Killer Moth (last in ???; next in Robin Vol. 2 #23)
Psycho-Pirate (last in ???; next in Manhunter Vol. 2 #12)
Satanus (last in ???; behind the scenes; next in Primal Force #13)
Scarecrow (last in ???; next in Hawkman Vol. 3 #26)
Shadow Thief (last in Hawkman Vol. 3 #21; next in Flash Vol. 2 #107)
Spellbinder III (last in ???; next in Detective Comics #691)
Hellgrammite (last in flashback in Superman: Day of Doom #2; next in Adventures of Superman #530)
Magpie (last in Batman #401; next in JSA #28)
Bolt
Deadline (both last in Deathstroke #48; both next in Justice League America #105)
Mammoth (last in Deathstroke #48; next in ???)
Merlyn (last in ???; next in Justice League America #105)
Chiller (last in ???; next in Justice League America #105)
Gorilla Grodd (last in ???; next in Catwoman Vol. 2 #27)
Crazy Quilt (last in ???; next in ???)
Dr. Spectro (last in ???; next in ???)
Prankster (last in ???; next in ???)
Black Spider II (last in ???; next in ???)
Cluemaster (last in ???; next in ???)
Fiddler (last in ???; next in ???)
Cat-Man (last in Batman: Shadow of the Bat #44; next in Batman: Blackgate - Isle of Men #1)
Solomon Grundy (last in ???; next in ???)
Black Bison (last in Crisis on Infinite Earths #12)
Shark (last in ???; next in ???)
Golden Glider (last in ???; next in ???)
Silver Swan (last in ???; next in ???)
Chronos (last in ???; next in ???)
Parasite (last in ???; next in ???)
Mongul (last in ???; next in ???)
Terra-Man (last in ???; next in ???)
Black Hand (last in Guy Gardner Reborn #1; next in Starman: the Mist #1)
Dummy (last in ???; next in ???)
Hyena (last in ???; next in ???)
Ocean Master (last in ???; next in ???)
Airstryke (last in Green Lantern Vol. 3 #52; next in JLA #34)
Dumas (Mark Shaw; last in ???; next in ???)
Carapax (last in Blue Beetle Vol. 2 #15)
Ventriloquist
Scarface (both last in ???; both next in ???)
Star Sapphire (last in ???; next in ???; latter three behind the scenes)

Guest Appearances:

Flash III (last in ???; next in Flash Vol. 2 #107)
Martian Manhunter (last in ???; next in ???)
Wonder Woman (last in Justice League America #104; next in Wonder Woman Vol. 2 #101)
Nuklon
Crimson Fox
Fire
Blue Devil (all four in between Justice League America #104 and #105)

Other Characters:

Deke Hobbsner (a gunshop owner)
Simon Crichton (a prison warden)
Carl (a guard captain)
Finney (a prison guard; dies)
Schmidt (an engineer; dies)
Lou Krupke (an inmate of Belle Reve Prison; first appearance of all)