Home People Allen Williams Allen Williams shows Allen Williams shows Allen Williams TV Shows (5) Sabrina, the Teenage Witch (1996) As Professor Klaveman, He was 3 years old Sliders (1995) As Don Welles, He was 4 years old 21 Jump Street (1987) As Doctor, He was 12 years old Knight Rider (1982) As Major Sanderson, He was 17 years old Knight Rider (1982) As Jack, He was 17 years old
