With Bucky Barnes still prone to manipulation thanks to his Hydra days, the hero-turned-unwitting assassin willingly chose to go back into cryo-sleep.
Despite playing a key role in Captain America: Civil War, and his presence in the Wakanda-set post-credits scene, the Winter Soldier will not be appearing in Black Panther.
With his current status confirmed, it seemed likely that Bucky would have at least some role to play in the upcoming standalone Black Panther film.
Now, however, it has been confirmed that Bucky Barnes will presumably remain on ice throughout T’Challa’s solo adventure.