Greg Bishansky writes...

There has been a lot of talk over the years about why Demona told Goliath about the Praying Gargoyle during her gloating in "Hunter's Moon Part Three".

1. The gloating was exactly that, gloating. Like most villains, she had to have a "my brilliant plan" speech.

2. Subconsciously, she wants to be defeated because without humanity around, she'll lose her scapegoat and because she subconsciously knows she needs to be stopped, so she subconsciously handed Goliath the tools to stop her master plan.

3. And this is my interpretation, she actually believed Goliath would let her. After what happened on board the Hunter's airship in "Hunter's Moon Part Two", saying Goliath is thinking like a true gargoyle as he openly demands vengeance, seemingly killing two Hunters with Goliath, and Goliath himself not disagreeing when she says that perhaps they're not so different; she believed he was finally, finally seeing the light, finally coming over to her way of thinking, and... well, since gargoyles mate for life, thinking she might finally have her man back and a human free Earth.

Or maybe it was all of the above or none of the above.