Produced by Grantray-Lawrence Animation, headed by Grant Simmons, Ray Patterson, and Robert Lawrence, it was an umbrella series of five segments, each approximately seven minutes long, broadcast on local television stations that aired the show at different times. The series ran initially as a half-hour program made up of three seven-minute segments of a single superhero, separated by a short description of one of the other four heroes. It has also been broadcast as a mixture of various heroes in a half-hour timeslot, and as individual segments as filler or within a children's TV program.
Sixty-five half-hour episodes of three seven-minute chapters were produced, for a total of 195 segments that ran initially in broadcast syndication from September to December 1966.
The series, produced in color, had extremely limited animation produced by xerography, consisting of photocopied images taken directly from the comics and manipulated to minimize the need for animation production. The cartoons were presented as a series of static comic-strip panel images; generally the only movement involved the lips when a character spoke, the eyes, and the occasional arm or leg, or a fully animated black silhouette. The series used the original stories largely in their entirety, showcasing Jack Kirby, Steve Ditko and Don Heck art, among others, from the period fans and historians call the Silver Age of comic books.
Marvel announced the series in the "Marvel Bullpen Bulletins" of the November 1966 issues, stating in that monthly fan page's hyperbolic style that, "It won't be long before our swingin' super-heroes [sic] make their star-studded debut on TV, appearing five nights a week — that's right, five — count 'em — five nights a week, for a half-hour each night. So you've just got time to make sure your set's in good working order — check your local paper for time and station — and prepare to have a ball!"
For WNAC-TV in Boston, Arthur Pierce portrayed Captain America in live-action segments for the show. Actors portraying other characters, including Dr. Doom, Hulk, and Bucky, also appeared in live-action segments. The segments were scripted by Superman co-creator Jerry Siegel.
Appearing in guest roles were:
The X-Men — The original lineup of the Angel, the Beast, Cyclops, Iceman, and Marvel Girl appeared in a Sub-Mariner episode, "Dr. Doom's Day / The Doomed Allegiance / Tug of Death". The story was an adaptation of Fantastic Four #6 (Sept. 1962) and Fantastic Four Annual #3 (1965) but since Grantray-Lawrence Animation did not own rights to the Fantastic Four, the producers substituted the X-Men — although referring to them instead as "Allies for Peace". However, the characters retained their original designs and individual names from the comics.
The Avengers — Episode 8 of The Incredible Hulk was an adaptation of Avengers #2 (Nov. 1963), and co-starred Thor, Iron Man (with his early golden armor recolored to match the red-and-gold design featured in the Iron Man episodes), Giant-Man, the Wasp. The lineup beginning in Avengers #4 (March 1964), with Thor, Iron Man, Giant-Man, the Wasp and the newly installed Captain America, appears in several Captain America episodes, as does the later line-up from Avengers #16 with Hawkeye, Quicksilver, and the Scarlet Witch.
Episode 1: Peril in the Surface World, So Spreads the Net, The Unveiling
Episode 2: The Start of the Quest!, Escape to Nowhere, A Prince There Was
Episode 3: Not All My Power Can Save Me!, When Fails the Quest, The End of the Quest
Episode 4: Atlantis Under Attack, The Sands of Terror, The Iron Idol of Infamy
Episode 5: The Thing from Space, No Escape for Namor, A Prince Dies Fighting
Episode 6: To Conquer a Crown, A Prince No More, He Who Wears the Crown
Episode 7: To Walk Amongst Men!, When Rises the Behemoth, To the Death
Episode 8: The World Within!, Atlantis Is Doomed, Quest for X-Atom
Episode 9: Beware the Siren Song, Spell of Lorelei, Return of the Mud Beast
Episode 10: Ship of Doom, Fall of Atlantis, Forces of Vengeance
Episode 11: The Planet of Doom, To Test a Prince, To Save a Planet
Episode 12: Dr. Doom's Day, The Doomed Allegiance, Tug of Death
Episode 13: Let the Stranger Die..!, To Destroy a Tyrant, Save A City
Segments of the series appear on at least two VHShome video releases, containing three videocassettes each: Marvel Superheroes: Triple Pack #1 (UPC #024543004127) and Marvel's Mightiest Heroes: Triple Pack #2.Fox Video released a version titled Marvel's Mightiest Super Heroes Gift Set (EAN #0024543004134).
In September 2004, Buena Vista Home Entertainment announced plans to release The Marvel Superheroes Show on June 28, 2005, as a five-DVD set titled The 60's Superheroes. By February 2005, however, the release was off the schedule.
On May 21, 2007, the UK company Maximum Entertainment released four two-disc sets, for Region 2, each set containing 13 episodes of the Captain America, Iron Man, Sub-Mariner and Thor segments respectively, with each episode re-edited into continuous, half-hour segments. On August 25, 2008, the UK company Liberation Entertainment released a two-disc set of the Hulk segments, re-edited into 13 20-minute episodes.