Patrick Troughton

The Doctor

Frazer Hines

Jamie McCrimmon

Wendy Padbury

Zoe Heriot

Kevin Stoney

Tobias Vaughn

Nicholas Courtney

Brigadier Lethbridge-Stewart

Edward Burnham

Professor Watkins

Sally Faulkner

Isobel Watkins

Peter Halliday

Packer/Cyberman Voice