Enemies both infamous and obscure abound in another archive of the X-Men\'s early adventures! Mainstay malefactors like Magneto and the Juggernaut are joined by the thunderous threat of Factor Three! Plus: the first appearances of Banshee and Polaris! Mimic vs. the Super-Adaptoid! Subterranean civil war! The X-Men\'s first individualistic uniforms!...