We don't have a biography for Knocker Roberts yet. Hang in there, or go ahead and contribute one.
Appearances
The XYY Man
Guest cast, played by Derrick O'Connor
- Episode 2x05: When We Were Very Greedy (Jul 25, 1977)
- Episode 2x06: Now We Are Dead (Aug 1, 1977)
- Episode 2x07: Whisper Who Dares (Aug 8, 1977)