Subject Delta is an Alpha series Big Daddy and is the main protagonist in BioShock 2.
He was one of many divers that were (involuntarily) a part of the Alpha Series project, which converted them into what are known as Big Daddies. He was the first successful subject to be bonded with a Little Sister. The Little Sister in question being Sofia Lamb's daughter, Eleanor.
— View the full Subject Delta overview
Recently Updated Pages
Subject Delta: Overview