First Appearance: Wonder Woman 125 (1961)
Creators: Robert Kanigher and Ross Andru
Abilities: Shapeshifting, skilled fighter, leader of an alien invasion fleet, native to a world with a chloroform atmosphere
Backstory: Fleet commander of an alien invasion force bent on conquering the Earth, Amoeba-man knew that the only thing standing in the way of his efforts for world domination was Wonder Woman.
Thus taking advantage of Wonder Woman in the silver age having a terribly messed up love life, Amoeba-man would shapeshift into a human knight on a winged horse which Wonder Woman would immediately recognize as the knight Galahad.
Defeating both Steve Trevor and Mer-man who were engaged in one of their regular duels to the death as they fought over Wonder Woman like a pair of feral dogs over a chunk of beef, Amoeba-man in his guise as a knight would romance and woo Diana, attempting to get her when her guard was down so that his invasion force which encircled the planet could begin their invasion once she did.
