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> making my Servant/Goddess/Waifu
I advice summoning one from the void instead. You can make a new being manifest if you have a clear and strong idea of who they would be.
When I first time saw Boosette I thought it was a ghost using the image, but later on someone during a session asked why there's someone who looks like a Nintendo character with me. We looked into it and it turns out Boosette was just a character created by the fanart community, she didn't exist until I expected her to exist. That's whey a Boosette came to me. 
Think of the void as a dark and mysterious vortex of nothing, where anything can exist if there is a reason for it to exist. Beings coming from there aren't bots, they're real.