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, wide gray-blue eyes, a long, thin nose 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.
Tori, her test administrator, tells her that she is "Divergent", that is, she has the aptitude to fit into multiple factions (Erudite, Abnegation and Dauntless), but is warned never to tell anyone that information, not even her family members.
In the Choosing Ceremony, Beatrice transfers to Dauntless, and assumes a new moniker "Tris".
She befriends fellow initiates Christina and Al, who are from Candor, and Will, an Erudite transfer.
In the first initiation period, her performance in physical matches against top-ranked candidates such as Peter places her on the brink of being cut from the faction, but she then participates in a capture the flag event where she plays a major part in her team's victory. 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 period, 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, drowning, being tied and burned to death, intimacy, and killing her family members), 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.After passing initiation, she discovers that Erudite plan to attack Abnegation.When a mind-controlling serum does not work on her, Jeanine Matthews, the Erudite leader orders Tris executed.Tris is saved by her mother, but during their escape, she is forced to shoot Will, and her mother is killed.Reuniting with her father, Caleb and Marcus, they sneak into the Dauntless base, but her father is killed in battle.Tris confronts a mind-controlled Four but helps him break free of the mind control, and then stop Jeanine in time to release the Dauntless.