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 | Trapped By Loki / Vengeance of Loki / Defeat of Loki | 1966-09-01 | 30 min |
| Season 1 | Episode 2 | Chained Evil / Sandu Master of the Supernatural / Enchanted Hammer | 1966-09-08 | 30 min |
| Season 1 | Episode 3 | Enchantress and the Executioner / Giants Walk the Earth / Battle of the Gods | 1966-09-15 | 30 min |
| Season 1 | Episode 4 | At the Mercy of Loki / Trial of the Gods / Return to Earth | 1966-09-22 | 30 min |
| Season 1 | Episode 5 | The Absorbing Man / In My Hands This Hammer / Vengeance of the Thunder God | 1966-09-29 | 30 min |
| Season 1 | Episode 6 | To Kill a Thunder God / Day of the Destroyer / Terror of the Tomb | 1966-10-06 | 30 min |
| Season 1 | Episode 7 | The Grey Gargoyle / Wrath of Odin / Triumph in Stone | 1966-10-13 | 30 min |
| Season 1 | Episode 8 | The Mysterious Mr. Hyde / Revenge of Mr. Hyde / Thor's Showdown With Mr. Hyde | 1966-10-20 | 30 min |
| Season 1 | Episode 9 | Every Hand Against Him / Power of the Thunder God / Power of Odin | 1966-10-27 | 30 min |
| Season 1 | Episode 10 | The Tomorrow Man / Return of Zarrko / Slave of the Tomorrow Man | 1966-11-03 | 30 min |
| Season 1 | Episode 11 | Enter Hercules / When Meet the Immortals / Whom the Gods Would Destroy | 1966-11-10 | 30 min |
| Season 1 | Episode 12 | The Power of Pluto / Verdict of Zeus / Thunder in the Netherworld | 1966-11-17 | 30 min |
| Season 1 | Episode 13 | Molto the Lava Man / Invasion of the Lava Men / Living Rock | 1966-11-24 | 30 min |
| Production | Steve Krantz | Producer |
| Production | Robert L. Lawrence | Producer |