Tris' friend and fellow Dauntless initiate. Christina is a character in the Divergent trilogy by Veronica Roth.
She transferred to Dauntless from Candor, and was Tris Prior's first and best friend during her initiation into Dauntless.
She was first introduced when she helped Tris onto the train after the Choosing Ceremony.
Christina befriends Tris and becomes a vital part in the beginning of Tris' new life in Dauntless. A last name is never mentioned.