So I was donating blood and was thinking of an AU where Billy knew he was Captain Marvel, knew how to access his powers but retained nothing of Marvel’s memories. A consequence of the magic is that the human mind can’t comprehend it so Billy transforms and essentially blacks out until he changes back. I can only imagine the sheer frustration of Bill having No Idea what he was up to as Marvel. His street buds think he’s the biggest Cap fanboy because he’s constantly tracking down down info on the heroes fights and missions in a desperate bid to understand. 

Marvel himself would be Billy but maybe he too has a hard time connecting to his mortal self’s memories. He knows he’s from Fawcett City, that he struggles and barely scrapes by under difficult circumstances but he really can’t recall any details or information about Bill’s life. He may even forget that his true self is child. Pretty ironic if Cap is voting down introducing child sidekicks to the League.

Freddy is shaking Billy down for info about what the Justice League is like and Bill is red faced from frustrated tears because he knows Nothing. He knows via interviews that the JLA loves Marvel, trusts him and talks to him alot but he doesn’t remember. Superman probably told Marvel his identity but does Bill know? Nope and its incredibly annoying.