If you're looking for anime similar to Android Kikaider, you might like these titles.
Murao Mima has created a robot daughter named Key, but after raising her for a very short time, Mima dies, leaving behind cryptic messages telling Key how she can become human. Key must struggle alone to learn the harsh lessons of life and search for the 'key' to her own dream: the power of 30,000 friends to make her a real human girl.
2 votes
I enjoyed Key considerably more than Kikaider, but both focus on a similar concept: a robot who has a soul (or wants to have one). If you like watching a robot come to terms with their own humanity, you'd enjoy either of these titles. Expect Key to be a lot darker, with a lot more character development.
Both animes have as a main character a robot who is searching to become a human, and they both follow their adventures in seeking the imposible to make it possible
Metropolis is a grand high-tech city-state populated by humans and robots alike. It is in these streets that Detective Shunsaku Ban and his sidekick Kenichi search for the rebel scientist Dr. Laughton who unbeknownst to them, is developing a super android named Tima as a tool for the Duke of Metropolis. What starts out as a normal case turns into mayhem as the scientist is murdered, and the true plans of the Duke are finally revealed...
1 vote
Though Metropolis and Kikaider do not share the same creator (even though Kikaider's designs are very similar to Tezuka's), they share a very similar tone and feel. In each anime, a robot struggles to come to grips with his humanity - and in each, there is a colorful cast of supporting characters to either help or attack our protagonist. If you liked one, the other should seem like second nature.
Among the garbage dumped down from the mysterious aerial city of Zalem, a new life is found. Restored by a brilliant cyberneticist, a young girl named Gally struggles to find her own place in the world, to learn the extent of her own deadly abilities and to discover that which makes her truly human: love.
1 vote
If you liked watching Jiro try to gain humanity, you'd enjoy Battle Angel Alita as well; its main character is also a robot who has no recollection of her past. Battle Angel Alita takes place in a more post-apocalyptic setting and in general is much better, so try it out!
As London prepares for the first World Expo, the young Ray Steam receives a package containing the Steam Ball, a small and incredibly powerful engine containing hyper-pressurized steam. Developed by Ray’s father and grandfather in America under the supervision of (and funded by) the O’Hara Foundation, the Steam Ball could prove to be an asset to civilization or a great danger. But after Ray finds out that the Steam Ball must not fall into the O’Hara Foundation’s hands, he sets forth on a mission to keep the item safe and away from those who would use it to fuel a brutal war...
1 vote
With their similar themes of technology and the morals we have to question and revise upon technology's advent, it seems clear that Kikaider and Steamboy are worth watching. Though Kikaider moves a bit more slowly than Steamboy, it goes into much deeper depth on defining the difference (or is it similarity?) between human and robot, and how we all relate.
In a dark future, the world is in ruin and everything is slowly crumbling away into dust. Humanity is almost extinct, while robots desperately seek out new parts to replace their rusting bodies. Their only hope for survival is to devour the one known as Casshern… or so they believe. Meanwhile, Casshern himself has lost all memory of his past. Why are these robots attacking him? Did he really kill the one known as Luna; the Sun that was called Moon? And why is he, alone, unaffected and undamaged by the ruin?
1 vote
The similarity between these two anime is the mental state of the main character, tough they are both robots. Casshern wakes up with no memories of anything, is searching for an answer about himself, being mentally disturbed, sometimes going out of mind, trying to help others not to be killed by evil minions.
Joe Shimamura is one of nine humans abducted and experimented upon by the mysterious “Black Ghost” organization. Awakening to find he has super powers no mere mortal could possess and the name of Cyborg 009, Joe escapes from the lab to meet up with the other eight humans that escaped. Together, they join forces to stop the mad scientist Dr. Gilmore, their creator, and Black Ghost itself. Can they prevail against this nigh unstoppable enemy before the world falls into their villainous control?
Both show explore the same values about android ethics and have similar action scenes. The, at times, dark atmosphere is also similar.
1 vote
Both shows deal with the same existential questions about what it is to be a sentient android and what should be the moral ramifications. Although the tone in Jetter Mars is very much light-hearted, while Kikaider is darker and more serious.
The year is T.C. 4767. Four thousand years have passed since humanity abandoned its birthplace, the planet Earth. Beset by the hostile alien Gnosis, mankind is now scrambling to find ways to defeat this threat to their existence. The development of KOS-MOS (a specialized android with amazing capabilities) by Vector engineer Shion Uzuki was one response to the threat, But when their ship is destroyed by the Gnosis, Shion and her companions find themselves thrust into the middle of a battle with no clear sides...