First Appearance: Wonder Woman 157 (1965)
Creators: Robert Kanigher and Ross Andru
Abilities: A massive, sentient egg and scientific criminal mastermind with advanced weaponry.
Backstory: One of the more distinctive characters in DC comics, Egg Fu, also known as Chang Tzu, is an anthropomorphic alien egg who dates back to the Silver Age. Like many characters of the era, there have been several incarnations over the years, all with varying backstories and alternate names, but all have maintained a scientific background and the same egg-shaped appearance. And although he would go on to serve as a villain or ally to an array of characters, and even become a member of the Great Ten, he was first a Communist agent, devious scientist and enemy of Wonder Woman.
Originally donning a mustache that doubled as a weapon for combat, he was first seen kidnapping Steve Trevor and turning him into a ‘human bomb’ to destroy an American fleet—a plan that would ultimately kill both Diana and Steve. Their remains are pieced together by Queen Hippolyta in a lab on Themyscira, but the residual damage to their bodies could only be reversed with anti-matter. He would later appear calling himself Egg Fu the Fifth, and later still, Dr. Yes.
Post-Crisis, Egg Fu was reintroduced as a mind-controlling super-genius computer revealed to be an accomplice to crimes of Apokolips. He would get another update during New 52, going by the name Chang Tzu. Again appearing as a giant egg, but now using a mechanical spider-like exoskeleton that contains a hidden armory. It was then that he formed The Science Squad, a group of the world’s most devious criminal masterminds. His base of operations is on Ooglong Island, with projects that included experiments on Metahumans.
This version would again reappear along with Wonder Woman during Dark Knights: Metal, and in various video games, but not before one more alteration, as a recurring character in Harley Quinn comics, his “real” name being Edgar Fullerton Yeung.