You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For simplicity, answers should be in all lower cased letters.
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Question: Category: '50s TV 
Clue: In "Have Gun, Will Travel", Richard Boone played this dapper gun-for-hire based in San Francisco's Hotel Carlton

Answer: paladin


Question: Category: RED, WHITE OR BLUE 
Clue: Jack London's follow-up doggie tale to "The Call of the Wild"

Answer: white fang


Question: Category: "R"RRRRR! 
Clue: Frank Gorshin played him on the small screen, Jim Carrey on the big

Answer:
the riddler