By Iron and by Fire
A new Vegan mecha comes to destroy Earth. It sucks power from the sun and burns everything in its path. Grendizer is damaged by it and has to withdraw. As the mecha attacks again Grendizer has to go to battle weaponless.

Cast
Kei TomiyamaDuke Fleed / Daisuke Umon (voice)
Hiroya IshimaruKoji Kabuto (voice)
Joji YanamiGenzo Umon / Great King Vega (voice)
Chiyoko KawashimaHikaru Makiba (voice)
Kosei TomitaDanbei Makiba / General Gandal / Nuke / Whiter (voice)
Kazuko SawadaGoro Makiba / Lady Gandal (voice)
Rihoko YoshidaGrace Maria Fleed / Commander Marine (voice)
Banjo GingaScience Minister Zuril (voice)
Kenichi OgataBlaki / Bunta Arano (voice)
Keaton YamadaAkira Hayashi (voice)UFO Robot Grendizer on tvt

