Proxima Midnight was a member of the Black Order. She and the others members assisted Thanos in his goal to gather the six Infinity Stones with the objective to kill half the population of the universe as a means to bring balance. After Thanos obtained the Space Stone from Loki, they were sent to Earth aboard Q-Ships.
After the Avengers took Vision to Wakanda, she and Cull Obsidian led an army of Outriders in an assault against the small nation before Corvus Glaive joined the siege. Proxima Midnight was killed after Wanda Maximoff launched her into one of her army's own vehicles and she was mauled.
- Carrie Coon portrays Proxima Midnight in the film Avengers: Infinity War, with additional motion capture provided, and stunts performed, by Monique Ganderton, due to Coon being pregnant while filming her scenes.
- Michael James Shaw, the actor who portrayed Corvus Glaive, has stated that while it is not acknowledged in Avengers: Infinity War, Glaive and Proxima Midnight are also a married couple in the Marvel Cinematic Universe, similar to their Earth-616 counterparts.
- 4 appearance(s) of Proxima Midnight (Earth-199999)
- 3 minor appearance(s) of Proxima Midnight (Earth-199999)
- 6 image(s) of Proxima Midnight (Earth-199999)