Talk:Ruin Sentinels/@comment-7974155-20140422151500/@comment-24249492-20140423195236

Well, these things do have souls, as stated in the armor. They are also found in the Drangleic Castle, behind locked doors. I actualy think these guys are the prisoners. They have no entrance or exit of their boss room, other than small, illusonary doors which are too small for them to open. In both Drangleic Castle and the Lost Bastille, there are stone guardians located outside. In Drangleic Castle, the only way to open the cells is by killing the guardians. It even seems like the third cell on the left in the Drangleic Castle was trying to dig it's way out, because of the hole in the floor.

My theory is flawed though. They're names are the Ruin Sentinels, which literally means "Guards/Watchers of the Ruin." Maybe they're guarding the Lost Sinner in the Lost Bastille, and acting like security guards in the Drangleic Castle.