Ebony Maw

Ebony Maw is a major antagonist in the Infinity Saga of the Marvel Cinematic Universe, serving as one of the four secondary antagonists of Avengers: Infinity War and as one of the two secondary antagonists (alongside 2014 Nebula) of its 2019 sequel Avengers: Endgame. A variant of him also appears as one of the four secondary antagonists of "What If… T'Challa Became a Star-Lord?", the second episode of the Marvel animated anthology series What If...?.
He is the herald & second-in-command of the Black Order who (alongside Cull Obsidian, Proxima Midnight, and Corvus Glaive) assists Thanos in his quest to collect the Infinity Stones. With his powers and smarts, he is the biggest threat of the four.
He was portrayed by Tom Vaughan-Lawlor.