X Bomb

X Bomb ("Ekkusu Bakudan" X爆弾) - English dub titled as "Deadline to Danger" - is an episode of the 1963 Astro Boy anime series.

Synopsis
X Bomb, which is capable of turning any substance to water, drops into the Pacific Ocean. There are 50 hours left until the explosion. Astro Boy goes to recollect it, but learns that Uran, who has followed him, has been swallowed along with the bomb by a whale.

Characters
In Order of Appearance: