Ep. 4: Astro Boy battles the massive Guernica monster swarm threatening to destroy numerous cities.
Aired on January 22, 1963

4
A colossal group of monsters known as Guernica causes the sequential fall of many cities. Astro Boy engages in combat against this overwhelming threat to protect the inhabitants and prevent further destruction. The narrative focuses on the direct confrontation between the hero and the monstrous horde as he strives to save the people from the devastation caused by the Guernica attack.
Episodes
- Ep. 1 · Dr. Tenma creates robot Astro Boy resembling his deceased son Tobio
- Ep. 2 · Frankenstein, an inferior robot, incites human distrust and persecution of good robots.
- Ep. 3 · Astro Boy leads Mars exploration while Lieutenant Cap rebels against robotic authority
- Ep. 4 · Astro Boy battles the massive Guernica monster swarm threatening to destroy numerous cities.
- Ep. 5 · Astro Boy faces a sphinx beast while captured by treasure hunters in a pyramid
- Ep. 6 · Skunk steals the paper glass robot Denko to free prisoners and build a gang empire.
- Ep. 7 · Alien doppelgangers of humans immigrate to Earth causing conflict over resources
- Ep. 8 · Dr. Ochanomizu uncovers a cloning plot in Gorgonia