Beatrice "Tris" Prior is the viewpoint character in Divergent and Insurgent, and shares the viewpoint character role in Allegiant with Tobias "Four" Eaton. Born in the Abnegation faction to Andrew and Natalie Prior, she describes herself as having pale blonde hair, gray-blue eyes, and a short and skinny stature. She bears a tattoo of three ravens on her collarbone leading down to her heart, each one representing one of her family members; she also has a Dauntless seal on her left shoulder and an Abnegation seal on her right shoulder. In Divergent, 16-year-old Beatrice has to take the aptitude test to determine her future faction. Tori, her test administrator, tells her that she is "Divergent", that is, she has aptitude in multiple factions (in her case Dauntless, Erudite, Abnegation), but warns her never to tell anyone about her placement, not even her family members. In the Choosing Ceremony, Beatrice transfers to Dauntless, and undergoes initiation and training under her new moniker "Tris". When she learns that only the top ten initiates will become members, she becomes more determined to get through the process and make the cut. She befriends fellow initiates Christina, Will, an Erudite transfer and Al from Candor. During the first phase of initiation, she endures physical matches against the top initiates such as Peter, and is badly beaten. Facing elimination, she participates in the Capture the Flag event, where she plays a major part in Four's team victory. She has also stood up for the other initiates, such as when she replaces Al as a target at a knife-throwing practice.
On visiting day her mother Natalie tells her to ask her brother to research the Erudite's simulation serum, and warns her about how she is being watched, revealing she was originally a Dauntless. During the second initiation phase, where the candidates are placed in a virtual reality simulation to see how they deal with their greatest fears (for Tris, it is being attacked by crows, and drowning), Tris shows an uncanny ability to dismiss or clear the obstacles in record time. This draws Four's attention as he invites her to enter his fear simulation and gives her tips as to how to give a Dauntless-expected response. She discovers that the Erudite are planning to attack Abnegation.
Tris finishes at the top of her initiate class. The Dauntless are then injected with a serum which supposedly helps track their personnel, but actually controls their minds so that they can attack Abnegation's residences. The serum does not work on Tris or Four, so the two try to escape and warn the faction, but they are caught and presented to Jeanine Matthews, the Erudite leader, who detains Four and has Tris executed. She is saved by Natalie, but during