Cameos: Lobo; The Imperial Guard; Thanagarians; Skrulls; Mongul; the Brood; the Khunds; the Watcher; Dr. Doom; Magneto (an image on a tattered poster); Hulk; Punisher; denizens of Monster Island [Fin Fang Foom; Mole Man's Monster; Tricephalus; Vandoom's Creature]; Metron; Loophole; Captain Marvel; Supergirl; President Lex Luthor; Booster Gold (picture in an ad); 3 Flashes [Jay Garrick; Barry Allen; Wally West (as pictures in a newspaper)]; Impulse (a picture in a magazine)
Synopsis:
Twin universes become imperiled due to a game being played by the Grandmaster and Krona. Their pawns: The Avengers and the JLA.
Notes:
Cameos of the various weapons that the heroes are gathering: The Bell, Jar, and Wheel; the Medusa Mask; the Spear of Destiny; the Eternity Book; the Orb of Ra; Green Lantern's power battery; the Soul Gems; the Casket of Ancient Winters; the Evil Eye; the Wand of Watoomb; the Ultimate Nullifier; the Cosmic Cube