Big Daddies are genetically-enhanced human beings who have had…




Big Daddies are genetically-enhanced human beings who have had their skin and organs grafted into an enormous diving suit. The candidates also go through voice box modification and pheromone application. This pheromone is what attracts the Little Sisters to the Big Daddies. They are then placed in large vats with a substance that effectively turns them into mindless drones. With gene splicing, the humans inside the suits were given enhanced strength and agility. Their suits are made mostly of steel and contain life support machinery to keep them alive during their duties and they function as exoskeletons; allowing them to lift heavy weights with ease. The suit also gives them the ability to resist deep ocean pressure to a depth of six miles. Big Daddies are sometimes assigned and outfitted to do other constructive tasks around Rapture. Big Daddies have been seen doing repairs and other maintenance tasks both inside and directly outside the city.

The Big Daddy was the brainchild of Dr. Yi Suchong. Knowing that the Little Sisters would be at great risk if they were out on the streets gathering ADAM with no protection, Suchong sought to rectify the problem. With much trepidation, he presented his idea to Andrew Ryan. Knowing that becoming a Big Daddy would be a “one-way street”, Suchong fretted about finding suitable candidates, despite Ryan’s assurances that it would not be a problem. Although the true identities of the candidates are unknown, it is probable that they are either criminals, supporters of Atlas, victims of Ryan’s mind control pheromones etc.

Big Daddies communicate by haunting sounds similar to that of a whale’s call. For easier interpretation, lights were added to the helmet to display what state of intention the Big Daddy is in. Big Daddy helmets have three light colors: green indicates the Big Daddy is hypnotized and friendly, yellow indicates awareness of but indifference to his environment, and red indicates a rage towards assailants.

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