The Fearsome Foursome is a fictional supervillain group, appearing in American comic books, it included which  fictional character, a supervillain appearing in American comic books published by Marvel Comics?
Klaw (Marvel Comics) 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.
Fantastic Four The Fantastic Four is a fictional superhero team appearing in American comic books published by Marvel Comics. The group debuted in "The Fantastic Four" #1 (cover dated Nov. 1961), which helped to usher in a new level of realism in the medium. The Fantastic Four was the first superhero team created by editor/co-plotter Stan Lee and artist/co-plotter Jack Kirby, who developed a collaborative approach to creating comics with this title that they would use from then on.