Guardians of the Galaxy are a superhero team appearing in American comic books published by Marvel Comics. The Guardians first appear in Marvel Super-Heroes #18 (Jan. 1969). The initial roster consisted of Vance Astro, Martinex T'Naga, Captain Charlie-27, and Yondu Udonta. Later members included Stakar Ogord, Aleta Ogord, and Nikki.