Mark Ruffalo is a renowned American actor, filmmaker, and social activist, best known for playing Bruce Banner, also known as the Hulk, in the Marvel Cinematic Universe. He was born on November 22, 1967, in Kenosha, Wisconsin, United States. He began his acting career in the 1990s, appearing in several small films. His first film was "Rough Magic" (1995), in which he played a small role.