B't X

B't X (Japanese: ビート・エックス, Hepburn: Bīto Ekkusu), pronounced "beat X" and stylized as B'T X, is a science fiction mecha manga series, written and illustrated by Masami Kurumada. It was serialized in Shōnen Ace from 1994 to 2000, with the 63 individual chapters published into 16 tankōbon volumes by Kadokawa Shoten. An anime adaptation containing 25 episodes was aired in Japan between April and September 1996, this series adapts the first six tankōbon volumes of the manga. A second season containing 14 episodes and called B't X Neo (ビート・エックス・ネオ, Bīto Ekkusu Neo) was aired between August and November 1997, this season adapts some chapters of the manga but has a derivative storyline and an alternate ending.

The manga was released in North America by Tokyopop. When B't X was released in America by Tokyopop, all of the sound effects in the manga were printed in Japanese, just as in the original version and in most other Tokyopop Manga, with the addition of English captions. In May 2012, Kurumada wrote in his blog that they are recording a new theme song for B't X but for what purpose is currently to be revealed.