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Dr. Tenma builds a powerful robot named Atlas whose abilities rival Astro's, But Atlas has a rebellious nature and begins to destroy Metro City. Astro must save the city from Atlas, while beginning to learn the secrets of his own past.
Makoto Tsumura
Atom (voice)
Miki Maruyama
Uranium (voice)
Hisashi Katsuta
Professor Ochanomizu (voice)
Shin'ya Ohwada
Nagamiya Tenma (voice)
Kazuo Kumakura
Higeoyaji (voice)