Spencer will play Amity leader Johanna who is described as pretty with a distinctive scar that runs across her face. Being one of the five factions in a post-apocalyptic Chicago, the faction of Amity believes in peace and trust. Insurgent picks up where Divergent left off, with Tris and Four seeking refuge in Amity while being on the run from Janine and her army.
Spencer is best known for her role as Minny Jackson in The Help, for which she won a Golden Globe and Oscar. She also starred in the indie dramas Fruitvale Station, and Snowpiercer.
Reprising their roles for the sequel are leads Shailene Woodley, Theo James, and Kate Winslet.
Insurgent will be directed by Robert Schwentke with a screenplay by Brian Duffield and Avika Goldsman.
Insurgent hits theaters March 20, 2015.