Ibac

Ibac is a character from Fawcett Comics and DC Comics, primarily known as an adversary of the superhero Shazam (formerly known as Captain Marvel).

 Publication history 
He first appeared in Shazam! #28 in 1945.

 Fictional character biography 
Ibac is essentially an acronym for "I am back," and he is a villain who gains his powers by invoking the names of various historical figures: Ivan the Terrible, Bacchus, Attila the Hun, and Caligula. 

 Powers and abilities 
By doing so, he taps into their strength and abilities. Ibac is often portrayed with a muscular build and a fierce demeanor, emphasizing his brutish, villainous nature.

 Themes 
His character embodies themes of power and corruption, as he utilizes the dark legacies of the figures he channels. Ibac has appeared in various comic storylines and adaptations, contributing to the lore surrounding Shazam and his rogues' gallery.