Prisoners Of The Mysterious MASTER MOLD!
1st Appearance "MASTER MOLD" (Designed By "Bolivar Trask")
Tracking the Sentinels back to their base to save Bolivar Trask, the X-Men are caught off guard by the bases defenses. The X-Men find the defenses too powerful and Professor X calls for a retreat. Planning another strategy, the Professor has Iceman create a glider out of ice that he and Beast will ride, followed by the Angel, in an attempt to sneak into the base. As Cyclops blasts the glider into the air with his optic blast, Hank and Bobby are soon captured and taken prisoner by coils that spring out of the defense system. Angel follows not far behind; however he's forced to retreat when a flame thrower almost sets him ablaze.
Beast and Iceman are then sealed within a cage and gassed so that the Sentinels can examine them further. Witnessing this, Bolivar Trask denounces the Sentinel’s plans to take over humanity in order to protect them from the Mutant menace. The Sentinels then take Trask to their creator and the machine he invented to create his Sentinel: The massive Master Mold. Master Mold demands that Trask pledge allegiance to him, or he will use the weapons cache that Trask had armed them with to destroy half of the United States. When Trask tells the giant robot that the X-Men will stop him, it almost gloats telling Trask that it will examine the two captured Mutants and defeat the others.
Outside of the Sentinel Base, the Professor attempts a different strategy on the Sentinels, knowing that his mental powers have some effect on the robots, he exerts all his will causing the Sentinels controlling the weapons within the pill box to suddenly shut down leaving the remaining Sentinels incapable of action until they get further orders from Master Mold. As Cyclops, Angel and Marvel Girl break through the defenses to gain entry into the Sentinel Base, the Beast is brought before Master Mold. Master Mold then forces Trask to use a psycho-probe device so that the robot might learn the origins of this Mutant in the hopes of learning a way to defeat Mutants.
Cyclops and the others meanwhile come across a bunch of deactivated Sentinels when they are spotted by one that is still active. With no orders on how to handle the intruders, the Sentinel tells the X-Men to follow it while it goes to get more instructions; the X-Men follow in hopes that it will bring them to its leader. As Beast recounts how his mutant powers gave him an advantage as a child over school yard bullies, the other X-Men find Iceman. Before they can free Bobby however, they are attacked by a team of Sentinels, which they easily defeat and then free their comrade. With Iceman revived, the X-Men continue their search for Hank and Trask.
Beast continues his tale explaining that in high school his Mutant powers made him a football star, attracting the attention of Professor X who would come to Hank's parents and offer to take Hank into his school to train him in the use of his powers. Hank by this point has not implicated Xavier's affiliation with the X-Men; however Master Mold decides that learning the identity of the X-Men's leader would provide him the key to destroying Mutants and he probes deeper. Monitoring the situation from safety with his mental powers, Professor X sends out his astral form to try and stop Hank from outing him as the X-Men's leader. With the probe stopped, Xavier then attempts to exert his mental will on Master Mold. However, the massive Sentinel detects Xavier's presence and repels his astral form with micro-electric blasts, sending a weakened Xavier to return to his body.
The X-Men meanwhile continue to fight their way through the armies of Sentinels created by Master Mold. Just when they think they have defeated all threats, the group is suddenly pinned to the ground by a strong magnetic force. With the X-Men defeated, Master Mold demands that Bolivar create an army of a thousand Sentinels. Trask refuses, and Master Mold orders his minions to grab hold of Tras