Bashiok, why do the artists hide Tyreal's face? I know its there, just wondering why they keep it hidden..

From what I've heard, Angels are vibrations of light and sound and don't hold a corporeal form.

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Q u o t e:
having read the first book in the sin war trilogy the angels are exactly as bashiok said, vibrations and light. they can manifest a face and body but it is only a form to hide their true identity to mortals.

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Ah right, right, they can create a human appearance for themselves (I think Inarius did for prideful reasons?) Not unlike some demons have, although their natural form is obviously far more tangible... and gross.