Master Mold was created by Dr. Bolivar Trask in fear of a race of superhuman mutants dominating the whole world and enslave normal human beings, made a super computer that would control and facilitate the construction of the Sentinels (mechanical warriors that are programmed to hunt and capture all superhuman mutants). Dr. Bolivar Trask also equipped Master Mold with powerful weaponry, speech and be mobile to be able to defend itself from mutants.