One thing Marvel seems adamant to keep doing is giving us origin and/or solo story lines for their many characters, even if the characters really don’t need one. There is, of course, an imbalance of male to female characters in the MCU and whereas most of the male characters have received a solo film or series, the female characters have been less fortunate.
Hayley Atwell’s Peggy Carter is one of the obvious exceptions to this rule, managing two seasons of a standalone show before it was eventually cancelled earlier this year. Jessica Jones is also another exception to this rule, whose origin story was shown on Netflix in November of 2015. There have even been rumours of a Black Widow solo movie in the works but this has not been confirmed as happening, Yet.
Like I said earlier, some characters deserve a solo/origin film of their own. We will soon be graced with Captain Marvel, played by Brie Larson, in her own solo film. We are also going to see Wasp (Evangeline Lilly) make an appearance soon as well. This will be in the next Ant-Man film, Ant-man and the Wasp, so isn’t technically a solo gig, but it’s likely to base heavily around the character and her relationship with Scott Lang (Paul Rudd).
However there are some characters that really don’t deserve a solo film.
Nebula (Karen Gillan) was a main antagonist in the plot for Guardians of the Galaxy, being the main right hand to Ronan the Accuser (Lee Pace). She is even set to appear in Guardians of the Galaxy 2, with what seems to be a larger role. However, an idea has sprung that Nebula deserves a solo film.
Guardian’s director James Gunn took to twitter to share his view on things: “I have a few favorites myself, but I agree that Nebula should lead her own film – it’s something I’ve thought about from the beginning.”
I strongly disagree. A solo film is not the sort of thing I think would be useful for the character, especially when there are other characters – male and female, human and, em, not – who are more likely candidates. Yet with Gunn behind it there seems to be a strong force going for it… should it ever get to the starting line
Source: MCU Exchange