A Big Daddy is a fictional character in the BioShock series, which was designed by Irrational Games.
In the sequel, BioShock 2, the player controls a Big Daddy.
Big Daddies are spliced (genetically mutated) human beings whose skin and organs have been directly grafted into antiqued, heavily-armored diving suits, and who roam the underwater dystopian city of Rapture where the protect the Little Sisters.


