Medusalith Amaquelin/MCU

 is a fictional genetically engineered humanoid and a central character featured in the shared continuity of the Marvel Cinematic Universe, which is based on characters and concepts seen in comic book titles published by Marvel Comics. Played by actress Serinda Swan, she appeared on the 2017 television series Marvel's Inhumans. She was introduced in the pilot episode of the show, "Behold... The Inhumans".