Cusick's iconic design of the Daleks was inspired by a pepper (or salt) shaker, which he picked up and moved around a table during a conversation with special effects expert Bill Roberts (in order to illustrate mode of movement).
Cusick designed "Doctor Who"'s immortal monsters, the Daleks, though
Terry Nation is usually credited with creating them.
Was an expert on Napoleonic warfare and author of magazine and periodical articles on the subject.