Clint Ritchie
Bill Prescott
Thunder is a 1977-1978 American children's show which aired on Saturday mornings on NBC. The show centered on the adventures of Cindy Prescott (Melora Hardin) and her friend, Willie Williams (Justin Randi) and featured Thunder, a black stallion who ran wild near the ranch owned by the Prescott family: The cast also featured Cindy's parents: Bill (Clint Ritchie), a rancher, and Anne (Melissa Converse), a veterinarian. imdb.com