It’s more likely that Marvel Studios is saving the reveal of the Black Order in future Avengers: Infinity War trailers.
Inspired by the recently released trailer for Avengers: Infinity War where most of the Black Order was nowhere to be found, brand new fan art puts Thanos’ henchmen front and center.
Onto the villain’s side of things, except for a millisecond shot of Proxima Midnight, Thanos is notably alone in his conquest.
Aside from Proxima Midnight, who was earlier revealed in several leaked images from the film battling Cap, Black Widow, and Falcon, as well as, the life-size statues of them unveiled back in July during the D23 Expo, we have yet to see the rest of the Black Order in action.