A recent film that features a strong supporting character is "Judas and the Black Messiah" (2021), with LaKeith Stanfield portraying William O'Neal. O'Neal's character is memorable because of the complexity and depth in his portrayal as a conflicted informant for the FBI, torn between his loyalty to the Black Panther Party and his own survival. Stanfield's performance brings a nuanced and captivating portrayal of O'Neal's internal struggles, making him a standout supporting character in the film.