Question: Is watching Star Wars necessary to know who Darth Vader is?, Answer:No, Description of Darth Vader: fictional character in the Star Wars franchise, Fact1: Star Wars is one of the most widely parodied film series to be produced., Fact2: Star Wars merchandise, from tees to Halloween costumes, is widely available and is plentiful. 
Step1: Has Star Wars inspired many parody films?, Step2: Are Star Wars merchandise depicting characters from the movie available?, Step3: Considering #1 and #2, are there no depictions of characters outside the movie?, Wikipedia page for step 1: Star Wars, Wikipedia page for step 2: Star Wars, Wikipedia page for step 3: , not_definitive_answer: False, incorrect_answer: False