I really like the riff on The Dummy in this comic.
Batman's Ventriloquist & Scarface really nailed the imagery of a ventriloquist's dummy as the villain to a superhero in such an iconic way, that there was no way to really bring back The Dummy without feeling like you were treading the same ground.
The Dummy as the boatman to the prison of the magiclands is about as different as you could get. I wouldn't mind seeing DC publish horror/villainy mini-series about the Magiclands prisoners (MSoE and others), with The Dummy serving as story host, like Cain & Abel did in their old horror series.