We all know Screwball/Screwy is the eldest child of Discord and Fluttershy.
Screwy may be insane like her father, but she is loved by her friends no matter what.
From the next generation of ponies, she is the fourth eldest behind Cream and the girls.
Every time Screwball gets together with the girls, they are either having a party or having a sleepover.
Screwball, despite her crazy personality, always stops fights in the group, especially when Zap and Cream are fighting when they're out farming or at Sugarcube Corner baking.
Screwball went to school with Cream since they are both from Ponyville.
Screwy's mane is purple with white swirly streaks in it, her coat is a light purple and her eyes have spirals in them to show shes the princess of chaos and daughter of Discord