Between February and July 1979, Marvel had the comic book rights to both Godzilla and the Shogun Warriors. While the characters never crossed paths in their respective comics, Trimpe (who did the artwork for both of the series) drew a variation of Godzilla and Rodan alongside Daimos, Great Mazinger, Raydeen and Gaiking on the top page of a comic book advertisement soliciting the Shogun Warrior toys. Mattel simultaneously had a license to produce Shogun Warriors toys (at the time) and a licence to produce toys based on Godzilla and Rodan. Though never appearing in the comic series, Red Ronin of Marvel's "Godzilla, King of the Monsters" comic book series was mentioned occasionally and was frequently written about in the letters pages.