Dave Prowse
From Tardis Wiki, the free Doctor Who reference
Dave Prowse (born 1st July 1935) played the Minotaur in The Time Monster. Outside of Doctor Who, the tall actor has a long resume of film and TV appearances, including playing no less than three different versions of Frankenstein's Monster - two for Hammer films of the early 1970s, and once as a Boris Karloff-style Monster in the 1967 spoof Casino Royale. His best-known roles, however, were as the body (but not the voice) of Darth Vader in the first three Star Wars films, and as the Green Cross Man in a number of British safety PSAs.