Duncan Kane (Teddy Dunn)Duncan Kane is Lilly Kane's brother.According to Lilly he was the favored child in the family. This is due in part to a medical condition from which Duncan has suffered since childhood.Although he is part of the wealthy 09er clique at Neptune High School and is friends with its most insufferable members Logan Echolls and Dick Casablancas, Duncan is essentially a good kid and an excellent student.He used to be Veronica's boyfriend, but suddenly broke up with her with no explanation.For one year, after Lilly died and Veronica's father Keith made Duncans dad Jake a suspect in Lilly's murder, he hardly talked to Veronica. It is clear that her new station in life pains him but he goes along with the crowd.He has no memory of what happened on the afternoon of his sisters murder.