Nostalgia and Opinion on Evil Dead

So, in the original Evil Dead, the Kandarian demon was that just unseen, fast moving camera angle with the groaning and the grunts. And I guess maybe in the beginning that it sort of was the red lights raising up the leaves. I'm surprised I remember all that, but I just love that movie so much. It wasn't until much afterwards that they actually showed it. I'm not a fan of it being shown, but I guess I understand why they did it. They needed to expand.