Jonathan Daniel Harris was an American character actor whose career included more than 500 television and film appearances, as well as voiceovers. Two of his best-known roles were as the prudent accountant Bradford Webster in the television version of The Third Man and the fussy villain Dr. Zachary Smith of the 1960s science-fiction series Lost in Space. Near the end of his career, he provided voices for the animated features A Bug's Life and Toy Story 2.