Captain Marvel and Ms Mary Marvel

Captain Marvel (Kree) + Captain Marvel (Shazam) = ... uh.. Captain Marvel

Ms. Marvel + Mary Marvel = Ms. Mary Marvel

Bat'son Mar-Vell was an officer in the Kree Armada who was stationed near Earth to observe the planet to see if it could be used as a tool in his race's war against their hated Skrull enemies.  Bat'Son performed his task dutifully, observing the planet but never involving himself in their affairs.  That all changed, however, when he was summoned to the planet by the wizard Shazam, who had chosen Bat'son to become the Protector of the Universe.  Believing Bat'son to be a noble soul, Shazam gave him the mystical Nega-Bands that would allow him to summon the Power Cosmic by crossing the bands and shouting the wizard's name.  Bat'son accepted his role as protector of the planet, taking the name Captain Marvel as his superhero moniker and taking the identity of Phillip Batson to live amongst the humans of planet Earth.

His station was a solitary one until he encounter Major Mary Danvers of the United States airforce.  Admiring her courage, Captain Marvel was distraught when she was critically injured during one of his adventures.  Marvel took her to the wizard Shazam to save her life.  The wizard told Marvel that he could share a portion of his power with her to save her life.  In doing so, Mary Danvers gained incredible powers of her own to rival Marvel's own.  Mary took the name Ms. Mary Marvel to serve as Captain Marvel's partner to protect the planet from threats from the Earth itself as well as from the stars.

Blending the concepts of Marvel and DC's respective Captain Marvel seemed pretty straightforward.  The original Captain Marvel was basically DC's Marvel wearing Marvel's original green and white costume.  So for my version, I thought I would invert the look, but king of give it my own spin.

Mary Marvel and Ms. Marvel was also fairly easy, given that Mary had a black costume of her own for a while.  So it was easy to get a blending of looks for their black costumes, especially since both have a lightning bolt design on their chests.