Umataro Tenma

Doctor Umataro Tenma (天馬博士, Tenma-hakase) is a brilliant roboticist, ex-minister of science, husband to Hoshie Tenma, and father of the late Tobio Tenma. In the 2009 animated movie "Astro Boy", he tells his robot servant Orrin to call him Bill, which is supposedly his first name, disagreeing with all previous manga.

Tenma plays integral roles in all version especially the '03 anime and manga. He created Astro Boy to replace Tobio his son after he died in an accident. Tenma perseonlaity in some versions includes, lurking in the shadows to keep an eye on the last thing he cares about in the world, Astro, but never revealing himself because he is too ashamed of his past behavior (manga), selling him to the circus and forgetting him (original anime), disowning Astro and later dying of a heart attack (1980s anime), or maniacally forcing Astro to become the overlord of a world ruled by robots against his will by making him evolve (2003 anime).

Tenma's role in the 2003 series is pulled mainly from the manga chapters "Astro Reborn" and "Melanin Tribe" where it is revealed to the readers that he is not just a mean man, but rather a wicked one bent on controlling Atom. He does redeem himself however in "Meeva".

He was voiced by Nicholas Cage in the '09 movie, with an entirely different character.

1960 Television Series

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1980 Television Series
In the 1980 series, Dr. Tenma was called Dr. Boyton in the English dub. Aftering failing to take Tobio to the fair like he promised, Tobio tried driving there himself, but got himself killed. Dr. Boyton secretly finsished the robot designed like a boy (Tobio suggested it to him) and activated him and treated him like his son. He planned to take his robot son to America on a ship. Unlike the manga, rather than abandon him, he angrily dismissed Astro after he made a mess at a diner. Dr. Boyton was last seen calling out to Astro, who unkowningly joined Hamegg.

Although not seen, Dr. Boyton died after trying to find Astro,

2003 Television Series
His English voice actor is Dorian Harewood

2009 Feature film
In the 2009 CG-animated feature film adaptation, Tenma, who is voiced by actor Nicolas Cage,[1] creates Astro Boy after his son Toby is killed in a robot testing accident. (Tenma accidentally locks Toby in the chamber with an experimental war machine called Peacekeeper.)

Tenma, with the assistance of Doctor Elefun, creates a robotic duplicate of Toby. He outfits the robot with advanced defence capabilities so that he can't be harmed. Then, he copies Toby's memories into the robot, hoping the robot will be just like his real son. Tenma begins to feel that this robot duplicate is acting strangely. When he realizes that the robot is not really Toby, he rejects him.

After the robot runs away, he is captured for the power source that Tenma used on him. It is to be extracted from him and put into the Peacekeeper. The robot encourages this decision, accepting that he could never live up to Tenma's expectations. Tenma, however, refuses to have the robot deactivated, saying "You're not Toby, but you're still my son!"[cite this quote]

Tenma is less villainous and less mad in the film. Instead, his personality is similar to that of the original manga. In the film, he reacts similarly as in the manga, realizing that Astro is not his son and rejecting him. However, he does not sell him to Hamegg. The major difference between the character of Tenma in the film and in other versions of Astro Boy is that Tenma comes to accept Astro. His first name is Bill.

Robots creatation
Astro Boy

Shadow

Blue Knight

Atlas(2003)

Trivia

 * The literal translation for Tenma is " Heaven Horse"
 * Tenma was born into a long line of horseradish farmers.
 * His first name "Umataro" is a combonation the Japanese word "uma"-horse and taro, a suffix for Japanese male names.
 * Tenma first appearance was in the Astro Boy prototype Captain Atom where he was more or less the main villain.