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Bolivar Trask created a servitor/controller called Master Mold, to control the perceived threat of the mutant race, who then went on to create the Mark I Sentinels (drones for the Master Mold). However, the Sentinels' logic dictated that the most efficient way to deal with the "Mutant Menace" was to control their creators. Master Mold gave orders to its 'soldiers' to rebel against their 'creator' and capture him to put phase I of its plan into effect: the creation of a vast army of Sentinels. Trask soon realised, that it was he, who had created the "threat". Concluding it was up to him to solve this problem, he sacrificed his own life to destroy the Master Mold


Master Mold was created by Stan Lee and Jack Kirby. Master Mold made its first comic book appearance in X-Men #15.

Major Story Arcs


On one occasion, the future-Sentinel Nimrod, in its human guise of Nicholas Hunter, came into contact with a module, a remnant of the Master Mold, and was overtaken by it. The Master Mold now contained two separate entities (in conflict), that of the original Sentinel and the Omega. Suddenly, the combination of the Master Mold and Nimrod made it possible for 'them' to detect the presence of the X-Men, who had previously been invisible .existent detection

Nimrod's logic contended the merging of itself and Master Mold had "mutated" them. Since the Master Mold was intent on destroying mutants, Nimrod now urged it to fulfill its Prime Directive by destroying itself. While the Mold-Nimrod synthesis was in conflict with itself, Rogue took up the fight, in the background the Omni-Dimensional portal known as the Siege Perilous opened up creating a Singularity-like field affecting All surrounding matter.

Versus the X-Men

Master Mold continued battling Nimrod for supremacy, creating multiple arms to anchor itself and resist the portal's gravitational field. The X-Man Dazzler unleashed an energy blast that destroyed the anchorage, unfortunately Rogue, who was in close proximity was also propelled through the portal. The robotic symbiote re-emerged as the Human/Sentinel hybrid Bastion, who went on to face the X-Men twice. Bastion was destroyed during a battle with the X-Men on Utopia.

Secret Avengers

Another Master Mold was seen acting as a sentry for the synthetic being known as "Father." When Jim Hammond and Captain Britain tried to infiltrate The Parish, Master Mold burst from the ground and attacked Captain Britain. It then tried to convince Hammond or "Grandfather" as it called him, to join The Descendents, and take his rightful place as their leader and help destroy the human race once and for all.

Hammond entered the head of the Master Mold sentry and commanded it to self-destruct. It obeyed this command, and almost wiped out the city it had been created to defend.

Powers & Abilities

The Master Mold is the most advanced Sentinel of its time. It has added to itself a repair program, utilizing metals and mechanical systems in its vicinity; it can interface with computer systems; and it can alter its size. The arsenal at its disposal includes various tracking and scanning systems, force fields, and energy weapons. Copies of its program are integrated into multiple modules, which allow it to survive the destruction of its body.


  • Height: Variable, usually 30'
  • Weight: Variable, depends on available materials
  • Eyes: Yellow
  • Skin: Depends on the materials present, but usually grey

In Other Media


Master Mold as seen in the X-Men animated series.
Master Mold as seen in the X-Men animated series.


Like in the original comics, Master Mold was created to eliminate all mutants. Determining that mutants are human, it decided that all humans must be eliminated. Professor X aided by Magneto managed to destroy it by crashing the Blackbird (loaded with high explosives) into it. It later resurfaced, with only its head active, but was again destroyed by the X-Men, with the help of former member Morph.

Wolverine and the X-men

A prototype Master Mold was created to deal with the mutant threat, and was destroyed by the X-Men. 20 years later, in a possible future, a female Master Mold has conquered the world and enslaved mutants. She was erased from history when the present day X-Men stopped the Phoenix from wreaking havoc on New York, with Emma Frost sacrificing herself to save the city.


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