The Marvel Cinematic Universe began toying with the idea of legacy superheroes a mere seven years into its existence, with Scott Lang stepping in to Hank Pym’s shoes in 2015’s Ant-Man. The film’s sequel, Ant-Man and the Wasp is set to do the same for Hank’s daughter Hope (welcome to the MCU, Janet Van Dyne!) and it’s also starting to look like 2019’s Captain Marvel may follow suit.
MCU Exchange, who first broke the “Children of Thanos” news a month ahead of its Comic Con reveal, have some interesting details ahead of Carol Danver’s first solo outing, beginning with where she’s been all these years. The film was already revealed to take place in the ‘90s, and given that something as massive as the present-day events of Avengers: Infinity War would be a good reason for her to return if she’s able, her absence (she’ll probably show up in Avengers 4) may have something to do with the quantum realm first seen in Ant-Man.
More importantly, the film may also feature an appearance from the Kree warrior Mar-Vell, the original Captain Marvel. The Comic Con concept art revealed the presence of both the Kree, first seen in Guardians of the Galaxy, and the Skrulls. Everything points to the comics’ Kree-Skrull war! But as for Carol’s superhero origin, it’s probably going to end up pretty similar to the comics, wherein the Psyche-Magnetron (a Kree weapon) exploded in their vicinity and blasted Carol with a dose of Mar-Vell’s Kree DNA, which may be used to explain why she hasn’t aged in 20 years.
The film may also feature a version Carol’s Ms. Marvel outfit in some form (potentially the original red one, pictured above on the right, though it could also be the black one on the left from years later), or at least something resembling or paying homage to her earlier appearances, presumably with a 2019-appropriate update, before she graduates to her now iconic red and blue. The guy you see in green is also Mar-Vell, though his appearance on the right of that Terry Dodson combined-variant cover is likely what he’ll look like since it’s a partial inspiration for Carol’s Captain Marvel suit created by Jamie McKelvie.
Legacy is an important part of the modern Carol’s character, and figuring out how to pay tribute without stepping on anyone’s toes is important to her. Sadly that probably won’t include the appearance of Monica Rambeau as a former albeit unrelated Captain Marvel like it did in the comics, at least as far as we can tell, but given that Carol’s outfit is meant to reflect Mar-Vell’s costume and her own Air Force history (as well as her time as Ms. Marvel; the red sash comes from the pictured black outfit), it’s likely that this part of the character will remain intact should Mar-Vell show up on screen.
He probably won't last long since he's primarily famous for being dead, but it's nice to know he's been around. Captain Marvel arrives March 8th 2019.