X-Men (1963) #13 (CGC 1.8)

2nd appearance of Juggernaut (Cain Marko)

"Where Walks The Juggernaut!"

Juggernaut has invaded the mansion and the X-Men struggle to take down Xavier's unstoppable half-brother. Human Torch lends a hand and Professor X is able to bring his brother down.

NOTE: Werner Roth (credited as Jay Gavin) pencils over Jack Kirby layouts.