Vinyl Scatch a.k.a. DJ-PON3 is Vonnie Strings' older Unicorn sister. Her best friend is Pinkie Pie.
She has pink eyes a white coat with a blue mane with lighter blue streaks. She mostly wears her sunglasses. Her cutie mark is a music note.
Vonnie Strings - Sister
Pinkie Pie - Best Friend
She's a DJ, OBVIOUSLY.