Big Daddy.

About Big Daddy

A Big Daddy is a fictional character in the BioShock series of video games. Big Daddies are heavily spliced human beings who have had their bodies directly grafted into heavily armored, steampunk-inspired atmospheric diving suits. They are armed with a rivet gun, heavy drill, rocket launcher, or ion laser. Alpha series Big Daddies are equipped with any of several other weapons as well. Though they make low-pitched groaning noises similar to whales, their vocalizations were performed by voice actor Stephen Stanton. Designed by Irrational Games, they first appeared in BioShock and were promoted heavily. A six-inch Big Daddy action figure was included in the limited-edition version of the title. In its sequel, BioShock 2, the player controls a prototype Big Daddy.