The X-Men invade the Sentinel's underground complex but are captured; Beast is taken before the Sentinel's leader, Master Mold, and has his mind probed; Master Mold commands Trask to make an army of Sentinels so they can take over the world.
Printed: Dec 1965
Writers: Stan Lee
Art: Jack Kirby, Dick Ayers, and Werner Roth [as Jay Gavin]
Cover: Jack Kirby and Dick Ayers
Key Issue Details
- 1st appearance of Master Mold
- Origin of Beast
- 2nd appearance of the Sentinels
