High Priestess (ハイプリエステス（女教皇）,Hai Puriesutesu) is the Stand of Midler featured in Stardust Crusaders. It has the appearance of a small furry imp and its power is to fuse with minerals, or take the appearance of anything made of minerals.
High Priestess is a Stand bound to minerals. Its "default" form is that of a small creature having a tribal mask with vicious eyes and bared fangs for a face, and clawed thin, muscular arms sprouting out a mush of inorganic matter. Moreover, it can turn into any inorganic object.
According to JOJOVELLER, its design takes elements from traditional outfits for African magic.
In the colored manga, High Priestess is reddish-brown with blue fur. In the anime, it is bone white with brown fur.
When Midler doesn't talk through it, High Priestess acts feral, only letting out savage cries or laughter and endlessly chasing after the Joestar Group.
It represents the Tarot Card The High Priestess, which symbolizes intuition and arcane knowledge.
The series is known for alternating colors between media, the information presented below may or may not be canon.
Eyes and teeth
(Blue fur, blue stripes beneath eyes, dark blue fingernails)
(Pink fur and stripes beneath eyes, red lips and fingernails)
Hair and fur
(Velvet stripes under eyes, purple lips, green fingernails)
High Priestess is a formidable opponent physically speaking. Its small size and nimbleness make it difficult to strike and its claws are very dangerous, being able to cut through Joseph's metal hand. This, combined with its ability that multiplies its options, makes for a fearsome opponent.
Moreover, because it is a long-range Stand, Midler can sit away from danger while she commands High Priestess. On the other hand, it also means that Midler can be taken out through defeating High Priestess.
High Priestess possesses teeth harder than diamonds, making them almost unbreakable. It can use them to bite hard on or crush the opponent by chewing them.
Mineral Possession and Reformation
High Priestess can become any mineral and metal
High Priestess possesses the ability to shapeshift and assimilate itself into any type of inorganic matter, be it metal, glass or plastic. Moreover, it can also replicate rather complex structures, transforming into a spear gun to shoot itself at the Joestar Group. The transformation is convincing enough that cautious examination or even trying to touch it will fool anyone. Because of that, it can disappear into a wall and then reappear elsewhere to strike. Its small size by default belies an ability to turn gigantic if it can assimilate a great amount of material like the stone of the sea floor.