According to ComicBook.com on Saturday, director James Gunn took to Twitter to explain the possibility of least one additional character when "Guardians of the Galaxy 2" makes is debut. Though Gunn had a good amount of mentionable characters that had been killed off in the film out in theaters today, with the pattern of Marvel team-based films, there tends to come an expansion of characters in the following sequels.
The information was gathered from E! Online as there was a question/answer session entailing an interview with Gunn. Currently, the comic books have starred Tony Stark as the Iron Man character as such an addition as well as Agent Venom and Captain Marvel. Discussions in the past in regards to other characters being in "Guardians of the Galaxy 2" had been Adam Warlock and Nova, but only as possibilities.
Gunn demonstrates such an addition to his next sequel as it related to at least bringing on another character:
"@eonline @afeeqdannoDNA I love so many - can't give it away but there should be at least one more Guardian from the comics."
Though, Cosmo was seen in the film as a cameo appearance, he just was an escapee from the captured chambers of the Collector's realm of acquired artifacts. In the comic books, Cosmo was more of a liaison to the Guardians of the Galaxy. Also, Warlock was suggested as the next character to join the Marvel Cinematic Universe and his cocoon was seemingly present in the Collectors location as a part of an Easter egg rich environment. Also, the Adam Warlock cocoon may have been seen in "Thor: The Dark World."
There had been also various Guardian versions of their own comic books with very different characters, but none that fall within the continuity of the Abnett and Lanning inspired film version that's in theaters today. For those who had seen the end tease to "Guardians of the Galaxy" there had been a character there, but it was only for the fun and amusement of the nostalgic 80s audience. It had nothing to do with tying it into the Marvel Cinematic Universe story line and Howard is far from being a member of the group that defeated Ronan the Accuser.