| 1 | Marvel Feature (1st Series) | 1st appearance of Omegatron; 1st appearance of Defenders; Death of Yandroth (physical body); Origin of Defenders; Giant-Size; Sub-Mariner reprint |
| 1/A | Marvel Feature (1st Series) | 1st appearance of Omegatron; 1st appearance of Defenders; Death of Yandroth (physical body); Origin of Defenders |