Big Daddy

A Big Daddy is a genetically enhanced humans featured in the Bioshock franchise.

Characteristics
Rapture is an underwater city in which are inhabited by various dangerous creatures and beings and among them are Big Daddies. Big Daddies are genetically enhanced human beings who have had their skin and organs fused into a giant underwater diver suit.

A Big Daddy's main purpose is escort and protect their Little Sister counterparts, who are mentally conditioned to search for ADAM in dead bodies. Little Sisters are almost always accompanied by their Big Daddy protector. Because of this bond between the Big Daddies and Little Sisters, it is known that if a Big Daddy would stray to far from the Little Sister or the latter was killed or taken, the Big Daddy would enter a comatose state or desend into madness.

Big Daddies communicate through haunting groans and whale-like calls, with some types of Big Daddies having liquid in their helmet indicating what emotion or state of mind it is in: Big Daddies will also sometimes drive the assailant away as warnings, if this works then the Big Daddy will remain friendly, if this warning is unsuccesful, the Big Daddy would become enraged and attack the threat.
 * Green means that the Big Daddy is friendly and hypnotized.
 * Yellow means that the Big Daddy is aware of its surroundings and is cautious.
 * Red means that the Big Daddy is hostile and is fully aware of any danger.