Super Electromagnetic Machine Voltes V: Volume 16

Included:

S01E31 Commander Oka Dies in the Sky!!
December 31, 1977 TV Asahi
Jangal sent a robot that can transform itself to become a ring that can control the mind of whoever wears it to Big Falcon. Megumi found and wore the ring and soon the ring took over her mind and ordered her to kill her own father, General Oka. At the last moment, General Oka could snap Megumi out of the ring's power and sent her away to safety, right before the beast fighter hit his helicopter and blew it into pieces.

S01E32 The Pursuit in the Jungle
January 7, 1978 TV Asahi
Jangal did a test on his robot in Popolonesia islands but unfortunately for him, his activities were sighted and reported to the Voltes team. Voltes attacked the robot and Jangal's flying saucer and made it crashed on an island. Jangal escaped into the jungle and the Voltes team were after him. Ippei wanted to kill him but Kenichi wouldn't let him. Kenichi said that he had Boazanian blood too, so Jangal was his fellow man.

Note: Remember, all the titles and names are different in the English dubbed version.