this is Sameness she is the staff made manifest into a sentient form when starlight glimmer and the main 6 left the cute mark vault the hole cave crashed down as the staff of Sameness got broken in half as a boulder smashed on top of it many years went by and a filly went to explore and found the broken staff as the energy flowing throw it latched on to the filly and pulls her in as the scream of the filly echoed across the sky as out of the ground came a strange creature that looked like a unicorn with a neck not attached to the main body and inside was wood teeth were wood right side back and front were wood and 2 tentacle-like staffs and this creature was filled with the Hatred, Anger, disgust, jealousy, and a will to make everyone Equal and a hatred for cutie marks filled its mind as it had the memories of starlight glimmer past and her colour but reversed with red eye’s.
 
Note; Sameness calls Starlight glimmer its mother in a creepy way.
 
note 2; Sameness completely ignores black flanks like sameness does not see them.