Nikolina Petrov

Nikolina Petrov (Bulgarian: Николина Петров), More known as Nina Pierce in Modern day life, is a fictional character. Nina is a witch who has the same personailty of her doppelgager, Katherine, except later on, she begins to be characterized as a caring and polite person, But  after the over use of magic her personaily goes back to the way it was before, sassiness, insensitivity, independence, pride, selfishness, and sense of self-preservation.