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A number of alternate universes and alternate timelines in Marvel Comics publications allow writers to introduce variations on the Hulk , in which the character 's origins , behavior , and morality differ from the mainstream setting .
 Marvel Comics, Hulk
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Marvel Comics, Hulk