|Synonyms:||BNF, trufan, actifan|
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Superfan is a vague descriptive term occasionally used by fans and mundanes alike. According to Fancyclopedia 2 (1959): "Applied sarcastically to Claude Degler, or in humorous compliment to many BNFs — especially Redd Boggs." It has been applied to many different kinds of fans: science fiction fans, sports fans, Star Trek fans, Harry Potter fans, etc.