CharacterViking Prince, Jess Bright, Hourman, Alan Scott (Green Lantern), The Losers (Capt. Storm, Dinah Drake (Black Canary), Rocky Davis) (in newsreel), Prof Haley, Bugs Bunny, Dr. Mid-Nite (Charles McNider), Captain Cold (Len Snart), Batman (Bruce Wayne), The Flash (Jay Garrick)) (all in cameo), Spectre (Jim Corrigan), Jimmy Olsen, Captain Marvel (Billy Batson), Prof Haley), Doctor Mid-Nite [Doctor Charles McNider], Sarge, J'onn J'onzz (Martian Manhunter, Wonder Woman (Diana Prince), Dr. Fate (Kent Nelson), Task Force X (Col. Rick Flagg, Jack Ryder, J'onn J'onzz (John Jones), Red Ryan, Wildcat, Iris Allen, King Faraday, Hourman (Rex Tyler), Johnny Cloud), Easy Company (Sgt. Rock, Karin Grace), Barry Allen (The Flash), Ace Morgan, John Jones (J'onn J'onzz, Gunner, Lois Lane, Carol Ferris, Native American (from early television sign-off image)), Hawkgirl (Shiera Sanders), Ice Cream Soldier, Vice Pres. Richard Nixon, Iris West (not pictured), Ted Grant (Wildcat), John Henry (John Henry Wilson), Dr. Charles McNider (Dr. Mid-Nite), Zack, Bulldozer, Groucho Marx, Chuck Yeager, John Henry, Martian Manhunter), Rocky Davis, Dr. Erdel, Johnny Thunder (western hero, on TV screen), Black Canary (Dinah Drake), Dr. Erdel (in briefing materials), Pres. Dwight D. Eisenhower, Wild Man, Karin Grace, Superman (Clark Kent), Justice Society of America (Green Lantern (Alan Scott), Hawkman (Carter Hall), Little Sure Shot), Col. Rick Flagg, Hal Jordan, Pooch), Cassius Clay (Muhammad Ali), Slam Bradley, Hal Jordan (Green Lantern), Pancho Barnes, Selina Kyle (Catwoman), Dr. Hugh Evans, Adam Strange, Steve, also John Jones), J'onn J'onzz (Martian Manhunter), Oliver Queen (Green Arrow), Johnny Cloud, Barry Allen, Flash (Jay Garrick), Jess Bright), Roy Raymond (referred to in Iris' article), Flash (Barry Allen)
Superhero TeamChallengers of the Unknown