In the original black-and-white series, Astro's cry was "Let's go -- go -- go!!
In the 2003 series Astro's cry was "Let's rocket!" It is also the morphing call yelled by the Space Rangers in Power Rangers in Space.
In the opening of The Simpsons episode 'Tis The Fifteenth Season all the members of the family are dressed up as Japanese superheroes. Bart is dressed up as Astroboy, wearing red boots and slicked back black hair.
American Idol 4 finalist Constantine Maroulis voices a Mechanic in an episode.
Astro Boy had two video games for the Famicom and Super Famicom that were only released in Japan. The Famicom version was done by Konami.
In 2004 Sega released Astro Boy: Omega Factor for the Nintendo Game Boy Advance, an earlier version of which had been released in Japan about six months previously. The U.S. version received great reviews , as had the earlier Japanese release, though the American version incorporates a number of changes and improvements. Interestingly, a number of other characters created by Osamu Tezuka have cameo appearances in the game, including Ambassador Magma, Amazing 3, Black Jack (manga), Big X, Rainbow Parakeet, Kimba the White Lion, and Unico.
A PS2 version of Astro Boy was also released by Sonic Team and published by Sega which brings the Astro Boy universe to the third dimension. Unfortunately the PS2 version received a poor two star rating from GameSpy compared to 4.5 stars for the Game Boy Advance game.
In commemoration of Astro Boy's "birth" in Takadanobaba on April 7, 2003, the JR platform in Takadanobaba has used the theme music from the TV series to signal that a train is about to leave.
Naoki Urasawa's manga Pluto is a retelling of a story arc in Tetsuwan Atomu called "The World's Strongest Robot."
Hamegg (Cacciatore in the American version) appears as a villain in the Kimba the White Lion anime.
Stanley Kubrick who saw Astro Boy asked the creator, Osamu Tezuka, to be a production designer on 2001: A Space Odyssey.
In 1977, Toei Animation was given permission by Tezuka to make an anime that was inspired by Astro Boy. It was called Jetter Mars, in which the main character has emotions and grows up like a child. He is torn between a loving heart and crime-fighting.
In the DC comics Elseworld Kingdom Come Astro Boy's face can be seen on a billboard during the League's battle on the rogue Meta-humens of Japan.
In the animated televsision series Freakazoid!, the titular character enjoys watching a show that happens to be a parody of Astro Boy, called "Hero Boy".
In a Calvin and Hobbes comic, Calvin wants to put Crisco in his hair for school picture day but his mother redoes it, so Hobbes makes Calvin look like Astro Boy.
The punk supergroup Osaka Popstar has a song dedicated to Astro Boy on their 2006 album called, obviously enough, Astro Boy.
Astro Boy has its own sushi restaurant in Gushikawa, Okinawa, Japan called Atom Boy.
Keiji Inafune, the creator of the Mega Man series, said that Astro Boy was a big source of inspiration.
Jonny Greenwood from the band Radiohead has an Astro Boy sticker on his Fender Telecaster.
The theme music was used in the video game Mr. Do!
Andy Milonakis wrote a play starring Astroboy, where he tries to help Rooster headed Chicken get the Sloomeramy beasts out of the Galacta-corn. The play starred Andy Milonakis and an old lady named Rivka.
In one episode of Astro Boy there is a sign on a door of the interior of Astro's family. The sign reads "Atom". This is either a direct copy of the original Japanese series or a tribute to it.
