Second Doctor
The Second Doctor is an incarnation of the Doctor, the protagonist of the BBC science fiction television series "Doctor Who". He was portrayed by character actor Patrick Troughton.
Zoe Heriot
Zoe Heriot (sometimes spelled Zoe Herriot) is a fictional character played by Wendy Padbury in the long-running British science fiction television series "Doctor Who". A young astrophysicist who lived on a space wheel in the 21st century, she was a companion of the Second Doctor and a regular in the programme from 1968 to 1969.