This is a match up that will definitely happen in some future Real Superheroines story arc. Captain Marvel is one of the few males on the planet--who is in the public domain--that could defeat Moon Girl in combat.
Boilerplate:
The Real Superheroines of Hive Valley is a webcomic about a reality television show following the lives of seven public domain superheroines that all live together in the same mansion in the elite community of Hive Valley.
You can read the series from the beginning ---> HERE.
Created in Clip Studio Paint Pro on my mobile art studio which is a Microsoft Surface Pro 4. Here is the timelapse video:
