Klaw (Ulysses Klaue) is a fictional character, a supervillain appearing in American comic books published by Marvel Comics. He is depicted as a human physicist who has been transformed into solid sound, and who wears a sonic emitter on his right wrist as a prosthetic device. He has often been shown in conflict with the Fantastic Four and the Avengers and is an enemy of the Black Panther and Ka-Zar.