This cartoon series, characterized by extremely limited animation, features five of the most popular super-powered heroes from Marvel Comics: the Incredible Hulk, the Mighty Thor, Captain America, Iron Man, and the Sub-Mariner.
| Title | Air Date | Duration | ||
|---|---|---|---|---|
| Season 1 | Episode 1 | Double Disaster/Enter Happy Hogan/Of Ice and Men | 1966-09-07 | 30 min |
| Season 1 | Episode 2 | The Death of Tony Stark/The Hands of the Mandarin/The Origin of the Mandarin | 1966-09-14 | 30 min |
| Season 1 | Episode 3 | Ultimo/Ultimo Lives/Crescendo | 1966-09-21 | 30 min |
| Season 1 | Episode 4 | The Mandarin's Revenge/The Mandarin's Death Ray/No One Escapes the Mandarin | 1966-09-28 | 30 min |
| Season 1 | Episode 5 | The Crimson Dynamo/The Crimson Dynamo Strikes/Captured | 1966-10-05 | 30 min |
| Season 1 | Episode 6 | Enter Hawkeye/So Spins the Web/Triple Jeopardy | 1966-10-12 | 30 min |
| Season 1 | Episode 7 | If I Die, Let It Be with Honor/Fight On, For a World Is Watching/What Price Victory? | 1966-10-19 | 30 min |
| Season 1 | Episode 8 | The Moleman Strikes/The Dragon of the Flames/Decision Under the Earth | 1966-10-26 | 30 min |
| Season 1 | Episode 9 | The Other Iron Man!/Death Duel/Into the Jaws of the Death | 1966-11-02 | 30 min |
| Season 1 | Episode 10 | The Cliffs of Doom!/The False Captain America/The Unmasking | 1966-11-09 | 30 min |
| Season 1 | Episode 11 | My Life for Yours/The Black Knight's Gambit/The Menace of the Monster | 1966-11-16 | 30 min |
| Season 1 | Episode 12 | The Dream Master/If a Man Be Mad/Duel in Space | 1966-11-23 | 30 min |
| Season 1 | Episode 13 | Beauty and the Armor/Peril in Space/As a City Watches | 1966-11-30 | 30 min |
| Production | Robert L. Lawrence | Producer |
| Production | Steve Krantz | Producer |