(dont use voice or I'll eat you like my chicken) Isaac Moriah is the titular main character of The Binding of Isaac, returning from the original 2011 version of the game. Isaac is the only character unlocked by default Isaac is a reference to the biblical story of the binding of Isaac, in which Abraham is commanded by God to sacrifice his only son, Isaac, to prove his loyalty and love. Issac Is Only 3,3 Ft. "Then God said, 'Take your son, your only son, whom you love — Isaac — and go to the region of Moriah. Sacrifice him there as a burnt offering on a mountain I will show you.'" (Genesis 22:2) Contrary to previous theories made about Isaac, he does not have a sister.[2] Isaac is bald because his mother shaved his head. This could be a reference to the Nazarite Vow in Numbers 6:1–21.[3] Isaac's natural hair color is strawberry blonde.