We did have to hold Glory back a little bit. In episode 12, which was entitled "Checkpoint, we had scenes with Glory where she doesn�t fight Buffy. We gave her one line when she said, "If I wanted to fight with you, you�d know by being dead already," so we did have to pull her back and make her vulnerable. That was a big problem - how do you make a God vulnerable?
So, we gave her a medical condition. If she didn�t suck someone�s brain out, she went nuts, and so that was a big problem for her. We treated her very much like someone who needed their medication, so we did have to pull it back and dial her back as the season went on and then really let her out - really let Buffy have it.