The surviving Alpha Series from BioShock 2 are in a permanent state of wrath due to prolonged separation from their Little Sisters. 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 Little Sister. However, he will react to people near him by shoving them. Yellow indicates awareness but indifference to his environment.Green indicates the Big Daddy is hypnotized and friendly.The Big Daddy has three different colors he will display. For easier interpretation, production model Big Daddies have a bioluminescent chemical substance which filled the helmet, displaying its state of emotion or mind. Alpha Series communicate with low, inhuman grunts and roars. 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.Īside from the Alpha Series, Big Daddies communicate by uttering haunting sounds similar to that of whale calls. 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.
