I saw the IPU's shadow once - it was fleeting but def was the IPU, or it could have been his mate, I'm not sure, they look very much alike except she is light blue - and then they have little one, male I believe, who is lavender and a bit of a sissy I have heard. You can hear the baby crying sometimes - sounds very much like a baby goat bleeting but there is a plaintive human cry to it - if you ever hear him you will know. So I will vote for the papa IPU because he is powerful, his horn is sharp, his pinkness is blinding (to the sphagetti guy, who has the power to see the IPU) and he has so much to fight for, family etc.
I don't believe in the goat vomit theory, but you sound like you know alot about goats. I just don't think that goats would submit to milking if they had the power to create universes!