Dani Phantom

Danielle Masters (also known as Dani Phantom) is a genetic twin sister of Danny Fenton who is accidentally created by his arch-enemy Vlad Plasmius. She first appears in the Danny Phantom episode Kindred Spirits and is voiced by AnnaSophia Robb in her first appearance and later by Krista Swan. Danielle would become one of the leaders of The Amity Park Adventure Team (along with Danny, Sam, Tucker, and Jazz).