BIG DADDY “ROSIE” (BIOSHOCK)
Rosies are clad in a basic heavy flexible fabric diving suit, the upper torso of which is covered by a high-gauge metal carapace. The head is guarded by a thick metal diving helmet welded to the torso carapace and has three large lit portholes. They wield large Rivet Guns and Proximity Mines at long range, and use the Rivet Gun for powerful melee attacks as well.
A red-striped Elite version is present in the original BioShock.
“Big Daddies represent BioShock: They are iconic fixtures in Rapture. In BioShock 2, you step into the shoes of the first Big Daddy and assume the role of one of the most feared beings within the city walls. Designing new Big Daddies posed a significant challenge: Not only did the team have to design a playable Big Daddy, but they also had to create other Big Daddies that would still present a significant threat to you, despite the fact that you now also wield a drill.”
― Deco Devolution: The Art of BioShock 2 – Introduction to Big Daddy chapter
Eight years after the events of BioShock, Sofia Lamb is in control of Rapture and she and her followers have produced new Big Daddies to help protect the Little Sisters. Bouncers and Rosies return to the sequel, along with three new types.
Big Daddies (originally named Protectors, and occasionally referred to as Mister Bubbles, or Mister B, by Little Sisters) are genetically enhanced human beings who have had their skin and organs grafted into an enormous diving suit, with Alpha Series being an apparent exception to the grafting process, though still heavily spliced. Their primary purpose is to protect Little Sisters while they escort them around Rapture. If all of the Little Sisters have been either harvested or saved in a level Big Daddies will wander to a vent like usual and bang on it. However, a Little Sister will not come out, causing the Big Daddy to groan in frustration and bang again before letting out a sad moan and walk away in an attempt to find another Little Sister.
Aside from the Alpha Series, Big Daddies communicate by uttering haunting sounds similar to that of whale calls. Alpha Series communicate with low, inhuman grunts and roars. For easier interpretation (as stated in the Deco Devolution art book), production model Big Daddies have a bioluminescent chemical substance which filled the helmet, displaying its state of emotion or mind. The Big Daddy has three different colors he will display.
Green indicates the Big Daddy is hypnotized and friendly.
Yellow indicates awareness but indifference to his environment, however, will react to people near him by shoving them, if the Big Daddy has a Little Sister with him and the player continuously stands in his way, the Big Daddy will become enraged in order to protect the threatened Sister.
Red indicates rage towards assailants.
The surviving Alpha Series from BioShock 2 are in a permanent state of wrath due to prolonged separation from their Little Sisters. This excludes subjects Delta and Sigma owing to their unique circumstances.
Big Daddy Types
So far, there are five main types of Big Daddy protectors, including two elite versions for only the Bouncer and Rosie. Of the five protectors, only four are functional and protect the Little Sisters, with only the original Alpha Series as non-functional protectors, with the exception of Subject Delta and Subject Sigma.