The primary antagonist and former champion of the wizard, now seeking vengeance after millennia of banishment. He attacks Billy, battles the heroes, destroys a dam, and takes hostages. Defeated and threatened with deeper banishment, he reverts to his mortal form and dies of old age.
Superman serves as the primary physical opposition to Adam's rampage.
Captain Marvel is the magical counterpart destined to stop Adam's return.
Adam's past betrayal created a lasting enmity with his former mentor.
Adam specifically seeks Billy to eliminate the new champion before he can act.