One of the X-Mens Most Popular Members Made Her Debut in This Avengers Comic (But Good Luck Finding Her on the Cover)

Marvels X-Men boast a unique history compared to many of Marvel and DCs other most popular titles and heroes. The late sixties cancellation and mid-seventies, Phoenix-like resurrection of the Uncanny X-Men comic stands out for many fans, but just as notable is an aspect that often goes undiscussed.