Genma Wars is a Japanese science fiction manga and novel franchise that began in 1967. It was a collaboration in Weekly Shōnen Magazine by science fiction writer Kazumasa Hirai and manga artist Shotaro Ishinomori. It was adapted into a 1983 anime film, a 2002 anime television series, and a 1983 laserdisc video game called Bega's Battle in North America.

Shotaro Ishinomori was a Japanese manga artist who became an influential figure in manga, anime, and tokusatsu, creating several immensely popular long-running series such as Cyborg 009, the Super Sentai series, and the Kamen Rider series. He was twice awarded by the Shogakukan Manga Awards, in 1968 for Sabu to Ichi Torimono Hikae and in 1988 for Hotel and Manga Nihon Keizai Nyumon. He was born as Shotaro Onodera in Tome, Miyagi, and was also known as Shotaro Ishimori prior to 1986, when he changed his family name to Ishinomori by adding the no (ノ) character in katakana.