James Gunn Explains The Collector's Sovereign Cocoon In The First GUARDIANS OF THE GALAXY Film
Adam Warlock was originally slated to feature in Guardians in the Galaxy Vol. 2 but some MCU fans are still convinced to this day that he actually had a cameo in James Gunn's first Guardians film.
Leading up to the release of Guardians of the Galaxy Vol. 2 in theaters, director and screenwriter James Gunn admitted that Adam Warlock was originally going to play a major role in the film before Gunn ultimately decided that the film had one too many characters.
Of course, back when the first Guardians film was released, eagle-eyed Marvel fans instantly spotted Warlock's cocoon amidst The Collector's assembled revelries...or so they thought. Initially, Gunn confirmed back in August 2014 that The Collector DID have Warlock's cocoon but then a few months later, tried to walk back that admission, stating that it may or may not be Warlock's birthing pod.
It's likely that as Gunn was writing the Guardians sequel, he realized that he may need to give himself some wriggle room with how Warlock would be introduced into the MCU.
According to Gunn, the cocoon on display in Tanleer Tivan's collection is an ancestor of the Sovereign.