Ep. 24: The Sultan commissions a million-horsepower robot to defeat seven powerful machines in a series of intense battles.

24

A Sultan orders the creation of Pluto, a robot with one million horse power, to defeat seven of the world's strongest robots. Pluto easily destroys Mont Blanc and then targets Astro, but encounters Uran instead. He takes Uran hostage to lure Astro out and destroys Molnar. The wrestler Brondo appears to avenge Molnar, heavily damaging Pluto in their fight. Pluto asks Astro to activate a beacon to summon his master, which Astro does. Later, Zeron arrives with an arrest warrant for Pluto and is nearly defeated before Pluto rips him in two. Dr. Elefun locates the Sultan's palace, and Astro follows. The Sultan holds Dr. Elefun hostage to force Astro to fight Pluto. Pluto returns to the palace and battles Astro, eventually catching him and threatening to tear him apart.