Stakar Ogord, known as Starhawk, first appeared in Defenders #27. He is the son of the Earth hero, Quasar, and the cosmic hero, Kismet.
Giraud, better known as Phoenix, first appeared in Guardians of the Galaxy #9. The original Guardians of the Galaxy first met Giraud when they attempted to save the mutant colony on Haven from destruction.
Pyreus Kril (Firelord) first appeared in Guardians of the Galaxy #2. He was a Xandarian soldier who volunteered to become one of Galactus's heralds. He joined the Guardians of the Galaxy offshoot to continue helping the universe.
In the distant future, a new Spirit of Vengeance appears on a distant planet and joins the Galactic Guardians.
Vance Astro, also known as Major Victory, first appeared in Marvel Super-Heroes #18. He was an American astronaut who signed on for the first manned space flight to another galaxy.
Aleta Ogord spent her initial days with the Guardians, irreversibly bonded with her adopted brother Stakar. Eventually, she gained her independence and joined the Guardians on her terms.
Hollywood appeared in the future to help Guardians of the Galaxy many times. Before that, he was a member of a group known as Commandeers.
Replica, a shape-changing Skrull, was a powerful ally and undercover operative for Guardians of the Galaxy. She was one of the strongest shapeshifters in the Marvel universe.
Martinex was a formidable member of Guardians of the Galaxy. He had enhanced speed and strength with the ability to generate intense heat or cold from bodily energy.