Captain Marvel

The foe of Black Adam, Captain Marvel (Billy Batson) is the Earth's Mightiest Mortal. Billy and his sister were orphaned when Black Adam killed their parents as they dug in Egypt and who captured Billy's sister. Aware of the events, Shazam brought Billy to confront Adam with the use of his new powers at the word of "SHAZAM!". Becoming Captain Marvel, Billy took on Adam and subdued him, but his sister was still missing so he became a member of the Justice Society of America. 

Billy possesses divine empowerment and summoning, by the word of "SHAZAM" which is granted to him by the 6 olympians Solomon, Hercules, Atlas, Zeus, Achilles and Mercury. He is super fast, strong and agile. He also possesses the power to fly, heal fast, teleportation, self-sustenance, invulnerability, superhuman intellect, photographic memory, magic immunity and even clairvoyance. If he is hit with enough lightning, Marvel can revert back to Billy again.