Katherine McNamara as Everette 'Ever' Cullen.
The rest of the cast as their respective characters.
Everette possesses the Relationship Identification and Manipulation talent. She can see relationships between people, strengthen them as well as break. She only has the power to break underdeveloped relationships. Strong friendships, true love, or family isn't possible. She and Rosalie share their passive talent, both being one of the most beautiful vampires in the world.
This is the general color pallet I'll be using while explaining the relationship ties. She sees them in color, the lighter it is, the lesser the relationship.
I do not own Twilight or its characters. I own Everette and the words she speaks.