Chadwick Boseman has died, as confirmed by posts made to his social media accounts. The actor — known for his fearless cinematic portrayals of Black icons Jackie Robinson, James Brown, Thurgood Marshall, and perhaps most famously, King T’Challa, a.k.a. Black Panther in the Marvel Cinematic Universe — had been diagnosed with stage III colon cancer in 2016. He “battled with it these last [four] years as it progressed to stage IV,” a social media note posted to his accounts read. Boseman was 43.