User blog:Brutal Templar/The Giants of Lordran could possibly be very close kin of the Giants of Dark Souls 2.

I had a sudden realization today. The Giants of Dark Souls 1, such as Gough, the Giant Blacksmith, the giants of Sen's Fortress, and the Giant Sentinels of Anor Londo...we never see their faces. They either wear masks (Blacksmith and fortress giants) or helmets that have no eyeholes (Gough and the sentinels). Now, let your imaginations run wild, my friends.

They don't exactly bear much resemblance to the gods of Lordran or any of the other inhabitants. I don't think that the gods were giants at all. They fall into their own category, in my opinion. Like Nito, the living skeleton, or the deformed snake-legs, Gwyndolin. Perhaps those that bear a powerful soul have the ability to increase or decrease their size. I.e. Ornstein going through one hell of a growth spurt after absorbing Smough's power.