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.
Grizzly (comics) Grizzly is the name of four unrelated fictional characters appearing in American comic books published by Marvel Comics. The first is a wild west villain, the second is an A.I.M. Agent, the third is a foe of Spider-Man, and the fourth is a mutant who was a member of Six Pack.