Beatrice "Tris" Prior is the viewpoint character in Divergent and Insurgent, and shares the viewpoint character role in Allegiant with Tobias "Four" Eaton.
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.
She overhears a conversation between the Amity leader, Johanna Reyes, and Marcus that Abnegation leaders died protecting a secret.
When Erudite and Dauntless traitors arrive to capture them, they escape by jumping on a train to the factionless camp where they meet Four's mother.During a visit to Candor, she reveals that she had killed Will.She later surrenders herself to Erudite to save her Dauntless friends, where she finds out that her brother is working for Jeanine but is later able to escape with Four and Peter.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.