Proxima Midnight is one of the members of the villanous Black Order. She is the wife of Corvus Glaive and the stepdaughter of Thanos. As one of the most fierce and formidable warriors in the cosmos, Proxima Midnight mercilessly uses her lethal skills to serve her adopted father Thanos in his quest to obtain all six Infinity Stones and erase half of all life in the universe.
Marvel Cinematic Universe (MCU)
Proxima Midnight was Thanos' adoptive daughter and a member of the Black Order. She joined her father in his quest for the six Infinity Stones, initially attacked the Statesman with her brothers and helped to kill the Asgardians aboard and retrieve the Space Stone. She later attacked Vision and Scarlet Witch, almost killing them until the arrival of Captain America, Falcon and Black Widow. She was forced to flee when Widow wounded Corvus Glaive before returning to fight in the Battle of Wakanda. She fought and nearly killed both Okoye and Black Widow before Scarlet Witch used her telekinesis to throw her to the path of a Thresher, killing her.
A past version of her from 2014 was brought into the future by Nebula, where she participated in the Battle of Earth, although she was killed by Iron Man.