Hector is Shauna and Lynn's little brother.  


Hector is first seen in the Candor headquarters when Lynn makes him move his bed so Tris has a place. He is later seen as one of the people affected by the simulation that takes Marlene's life. Tris decides to save Hector instead of Marlene. Lynn later privately thanks Tris for saving him even after the girl she was in love with had died the same way her brother was about too.