Astro Boy Astro Boy Episode 2 Rocket Ball ( Air Date 2003-04-13 ) Genre Animation, Action & Adventure, Sci-Fi & Fantasy, Family, Comedy, Kids category. Overview "When a friendly robot-dog invites Astro to watch a game of Rocket Ball, he looks forward to a fun day at the ballpark, Instead, the game turns chaotic when the robot players start destroying the stadium and threatening the human spectators. Astro must find a way to save the humans and get the robot athletes under control!".