David Gallagher is an American actor and voice actor, best known for his roles in television and film. He gained popularity in the early 2000s for his performance as Simon Camden on the television series 7th Heaven. His work in the entertainment industry has also included appearances in various movies and voice roles in animated series. In addition to acting, Gallagher has pursued a career in music and has been involved in various projects over the years. He has also made guest appearances on other television shows, showcasing his versatility as an entertainer. His contributions to both acting and voice work have made him a recognizable figure in Hollywood.