George Pérez (breakdowns, credited); Bob Smith (finished art)
Bob Smith (credited)
Shelly Leferman (credited)
Len Wein (credited)
Firestorm [Ronnie Raymond; Martin Stein]; Multiplex; Killer Frost; Hyena (villains cameo); Justice League of America [Zatanna; Flash [Barry Allen]; Batman, Superman; Atom [Ray Palmer]; Black Canary [Dinah Laurel Lance]; Green Arrow [Oliver Queen]; Green Lantern [Hal Jordan]; Aquaman] (JLofA cameo to Firestorm joining)
Ronnie recounts their origin and history to Martin, and convinces Martin that they are Firestorm (who is only aware of their identity when the two are combined).