During Furt, Finn's mother marries Kurt Hummel's father, thus making them step-brothers.
Finn is previously engaged to Rachel Berry before letting her go to New York City without him in Goodbye. Finn is the substitute director for the New Directions while Will Schuester was in Washington from Glease to Girls (and Boys) on Film, when Will returns to coach New Directions.
This desire is exploited by the Spanish teacher and Glee Director, Will Schuester, who after overhearing him singing in the men's locker room shower, plants marijuana in his locker and blackmails him into joining the Glee club.
Afraid his mother will find out he had pot, Finn agrees.
The two were co-directors until the end of Feud, when Will found out that Finn kissed Emma, and with the encouragement from Marley, Finn left Mc Kinley to obtain a teaching degree at the University of Lima, but later he decided to help Will once again in Mc Kinley.
Due to the death of his portrayer, he died during the fifth season, and The Quarterback was a tribute for him.
Finn appears extremely freaked out by Rachel in their first rehearsal, and is reluctant about performing.