Today at San Diego Comic-Con, Chadwick Boseman (T’Challa/Black Panther from “Captain America: Civil War”) unveiled a sneak peek of a bonus feature clip from the in-home release of “Captain America: Civil War.” This is the first piece of bonus material to ever be revealed from this year’s biggest blockbuster.

The clip is from the 60-minute, behind-the-scenes featurette titled “United We Stand, Divided We Fall – The Making of Captain America: Civil War Part 1 & 2.” It showcases how Marvel selected Black Panther and features interviews with all-star cast members who explain what it was like to welcome an all-new character to the MCU family.

Marvel’s “Captain America: Civil War” arrives on Digital HD, Digital 3D and Disney Movies Anywhere on Sept. 2 and on Blu-ray 3D, Blu-ray, DVD and On-Demand on Sept. 13.

Below, also today, Chadwick Boseman appeard on “Marvel LIVE!” at San Diego Comic-Con to talk about the Black Panther movie.