Ep. 21: Sink the Enemy's Battleship
Ipinalabas noong Setyembre 25, 1980
21
Mga Episode
- Ep. 17 · Battle on the Planet of the Apes
- Ep. 18 · Betrayal on Ajian
- Ep. 19 · Gyamose's Special Command
- Ep. 20 · Battle the Twin Devil
- Ep. 21 · Sink the Enemy's Battleship
- Ep. 22 · The Legend Lives Again
- Ep. 23 · The Shocking Decoy Planet
- Ep. 24 · Strike the Infiltrating Guerillas
- Ep. 25 · Ideon's Counterattack