The world of animated films in Japanese popular culture has been a growing trend since the 1920s. Influenced by Walt Disney and his animated characters, Osamu Tezuka (1925–1989), also known as "manga no kamisama" (which means, "God of Comics") would begin his forty-year evolution of animation, or anime, that would change the content of Japanese comic books. With the creation of his first animated character Astro Boy that was unlike any other animated character; he found the hearts of the Japanese public with a robotic boy who has spiky hair, eyes as big as fists, with rockets on his feet.