Talk:Royal Sentinel/@comment-67.242.12.34-20130822212903/@comment-6003396-20130823052800

I think they are a form of Giant. Observe the word "Giant" in all of the equipment that they use.

The item descriptions of several also state:

Used by the giant sentinels of Anor Londo.

I suppose that it might be possible that the word "giant" here is purely descriptive - simply referencing their relative size. But I think it is a safe assumption to make that they are Giants.