Avengers #23

The tension between two of the Avengers' most complex figures takes center stage on this 1999 issue, as Wonder Man and the Vision square off nose-to-nose with fists raised, the luminous visage of the Scarlet Witch looming large between them in swirling pink energy. George Pérez's cover art captures the charged rivalry beautifully — every clenched jaw and curled fist radiating the kind of simmering conflict only teammates with a deeply shared history can produce. "Showdown" promises exactly what the cover delivers: Earth's Mightiest Heroes at their most dramatically human.