The Gyne "Sisters" are a trio of monsters in Phantom Dust. They can be difficult to fight, given that they either replace each other after one falls, or attack three at once. They are usually associated with Tsubutaki's missions, and use self-sacrificing attacks.
Aside from the last time you fight them, you must fight them without a partner.
The physical appearance of a Gyne is a decaying, gray-fleshed, woman. The head is gone, with only a straight spinal cord protruding from the neck. A ponytail dangles from the top of it.The Gyne also has no feet. but walks as if they were there. running or walking simply in mid-air. They are playable online by highlighting Tsubutaki and holding the left and right triggers.