Ninpou futago kikai juu toujou
- Episode aired Oct 14, 1973
![Mazinger Z (1972)](https://m.media-amazon.com/images/M/MV5BM2QyY2MyZWItMDQyNy00ZDU1LThhZGUtOTFmZjQ4YzFiMGRjXkEyXkFqcGdeQXVyNjk1Njg5NTA@._V1_QL75_UY281_CR6,0,190,281_.jpg)
Dr. Hell intends to blow up the research institute with a cobalt bomb and sends two twin robots, Brozas S1 and S2Dr. Hell intends to blow up the research institute with a cobalt bomb and sends two twin robots, Brozas S1 and S2Dr. Hell intends to blow up the research institute with a cobalt bomb and sends two twin robots, Brozas S1 and S2