Poison Daydream is a changeling that doesn't need to feed of of love. Because of this she grew tall and doesn't have any holes in her legs, hair or wings. But by changeling standards she's week; emotionally and physically because she gives into love and seemingly can't feed from love leaving her with less power than the others. She was driven out of the changeling city and headed towards civilisation. (This isn't based in the show My Little Pony, I adopted stuff from it but this takes place out side of Equestria). While traveling she found a dyeing parasprit she saved it even though she knows that they reproduce rapidly and eat anything they find. She was prepared to kill it if it spat out a ball which would form into another parasprit, but quickly learned that this one couldn't reproduce or eat anything that isn't edible to ponies. She called him Mango and continued her journey. Upon finding a lively city filled with lights she used her magic to turn herself into a non existing pony called Luni Smoothy (she refuses to take anyone else's identity).
Personally: friendly, caring, a little shy
Most of my other My Little Pony original characters are Poison Daydream in different forms.