Martinex first appeared in Marvel Super-Heroes #18 (Jan. 1969) as part of the Guardians of the Galaxy. According to Roy Thomas, all of the original Guardians of the Galaxy were created in a conference between Arnold Drake and Stan Lee, but it remains uncertain whether each individual character was created by Drake, Lee, or both. The team was featured in several Marvel titles: Marvel Two-In-One #4-5 (July-Sept. 1974), Giant Size Defenders #5, and The Defenders #26-29 (July-Nov. 1975), and writer Steve Gerber included the character when he revived the team in Marvel Presents #3-#12 (Feb. 1976-Aug. 1977).