Concept art
Concept art was prepared depicting several possible versions of the Doctor based on actors such as Peter O'Toole, Jeff Goldblum and Christopher Lloyd with elements of the wardrobes of previous Doctors. Production sketches also showed new versions of allies such as K-9 and enemies such as the Daleks and Cybermen. The Master was to be "half-man, half robot with a cybernetic bird accessory and a face modeled after Sean Connery". The show was also to feature female companions from Earth, and space battles which the BBC would not have been able to afford for the live action series.