Do doppelgangers agree or disagree with each other?

As they are often harbingers of dire events, they tend to be in disagreement with the real life person, a mirror image of the health and vitality of the subject.

And yet, neither agree nor disagree, because they are never confronted nor present, only at a distance or as an apparition.

Not always. Being the exact same height to be able to see eye to eye doesn’t mean they always see eye to eye.

Cannibal variants tend to disagree with ones constitution & can lead to a severe dose of the trots.