Ep. 4: Search and Destroy!! Science Fortress Lab!!
Ipinalabas noong Setyembre 29, 1974
4
Mga Episode
- Ep. 1 · The Hero of the Skies, Great Mazinger
- Ep. 2 · Hell's Messenger!! The Instigator of Darkness, Garalya
- Ep. 3 · Honoo's Guts!! The Wild Venus!!
- Ep. 4 · Search and Destroy!! Science Fortress Lab!!
- Ep. 5 · Attack of the Combining Warbeast
- Ep. 6 · Tetsuya Tsurugi in Hell
- Ep. 7 · An Impossible Rescue?! The Litte Braggart!!
- Ep. 8 · Killer Blow!! The Drill Pressure Punch!!