The Black Order didn't make the biggest of impacts in Avengers: Infinity War, and were basically background players in Avengers: Endgame. Unless they appear in flashbacks, their time in the Marvel Cinematic Universe is at an end, and that's a shame considering what could have been done with them in this shared world moving forward.
Now, some concept art from Avengers: Infinity War has been revealed by Jerad S. Marantz showcasing a very different take on the villainous Proxima Midnight.
As you can see below, the artist explains that he was asked to deliver a more alien take on Thanos' "daughter," and it seems he may have taken inspiration from bats for how she could look on screen. In the second post, Marantz shares bat-like creatures that were once going to play a bigger role in what went down on Titan, so perhaps that's where the idea for Proxima came from.
It's definitely a cool take on the villain, but what ultimately ended up on screen was hard to fault.
Check out the concept art below: