Sargon the Sorcerer is the name of several fictional characters appearing in DC Comics. The first version of the character appeared in 1941, during the period known to fans as the Golden Age.
Sargon the Sorcerer I (John Sargent), art by Howard Purcell.
Sargon the Sorceror II (David John Sargent), art by Scott Hampton.
Giovanni "John" Zatara, simply called Zatara, is a fictional magician and superhero appearing in American comic books published by DC Comics. The character first appeared in Action Comics #1 in 1938 during the Golden Age of Comic Books, making him one of DC Comics' oldest characters.
Zatara as depicted in Justice League Dark vol. 2 #7 (March 2019). Art by Álvaro Martínez Bueno and Raúl Fernández.
First appearance in Action Comics #1, in which Zatara often—but not exclusively—used backwards speech to accomplish his magic.
Zatara as he appears in Batman: The Animated Series.