5. Metal Heroes (Space Sheriffs)
Metal Heroes is a superhero series featuring a variety of androids, cyborgs and humans who wear metallic suits.
The Space Sheriffs are the enforcers of peace and justice sent by the Galactic Union Police.
6. Astro Boy (鉄腕アトム)
The first Astro Boy manga hit the shelves in 1952.
Astro Boy takes place in a future world in which robots and humans live side by side. Astro Boy is an advanced robot with the ability to express human emotions. He defends humans from robots gone berserk, human-hating humans and alien invaders.
7. Science Ninja Team Gatchaman
Five young superhero ninja who protect the World’s natural resources from giant monster robots.
The series had additional English adaptations with G-Force: Guardians of Space (1986) and ADV Films’ uncut 2005 release.
8. Mazinger Z
Mazinger Z known briefly as Tranzor Z in the United States, is giant super robot constructed of a metal called Alloy Z. This super metal is made of a new element (Japanium) found only deep inside Mount Fuji.
9. Pegas (Tekkaman)
Pegas is a Tekkaman — a super strong human with a suit of indestructible armor and a variety of super weapons and tools.
By himself Tekkaman is incredibly strong to the point of tearing through alien spaceships with his bare hands, has thick armor that allows him to survive in any environment and even corrosive substances and atomic blasts, and possesses superhuman agility.