The Day when the Sun will Stop
The Vegans plan is to bring Grendizer to the shadow of the moon during the eclipse because Grendizer's systems will shut down temporarily under it and then destroy it.

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

