J.J. Walker is an American comedian and actor who rose to fame in the 1970s for his role as J.J. Evans in the popular TV sitcom "Good Times". He is known for his distinct, high-pitched voice, and his catchphrase "Dyn-o-mite!" After his success on "Good Times", Walker continued to work in television and film, appearing in shows like "The Love Boat" and "Fantasy Island", and in movies like "Let's Do It Again" and "The Greatest American Hero". He also became a successful stand-up comedian, touring nationally and appearing on talk shows like "The Tonight Show Starring Johnny Carson" and "Late Night with David Letterman". Walker's comedy style is characterized by his high-energy, observational humor, and his ability to connect with audiences from diverse backgrounds. He often draws on his own experiences growing up in the Bronx, and his observations about race, class, and culture.