Does Drista exist in the TGON au?
YES! Drista is very much canon to The Graveyad Of None!
LORE:
Drista originally was a normal hybrid but soon developed powers, they weren't strong but still higher than average. She could turn into a specific form (shown below) and trick people into doing her bidding, her powers mostly consist of manipulation.
Her main role was cheering up lost souls in the "evergarden." (I shall make a post about this later! But in short its an in-between of Limbo and Death. A more peaceful kind.) Until rescue comes to guide them.
Drista is Dreams and Foolish's younger sister! But holds a strong resemblance towards Dream especially. She isn't too important to the lore, but does have her moments!
PS: she was a pain in the ass to design :"D
This is her "higher" form. She does not look like this normally, but just when using her powers!