Beatrice the 16-year-old protagonist of the novel. Beatrice was born and raised in the Abnegation faction, but chooses Dauntless because she feels it is who she truly is. However, her aptitude test was inconclusive, and she is "Divergent" - a fate that is mysterious but also dangerous. Once in Dauntless, she begins again under a new name - Tris. Tris is strong-willed, courageous, and reluctant to show weakness, particularly during her initiation into Dauntless. While she thrives in her new faction, she still feels strong ties to the family she left behind.
The 16 year old who goes to Dauntless, even though she's a Divergent, which means she can fight simulations in her own fear factor. (She goes into Four's fear simulation).