Definition of "superfan"

Baseball has its superstars, pro football has created a superbowl, and college football is stuck with the superfans.

1966 October 30, “Superfans Hurt College Football”, in Washington Post‎, page C7

Subscription and fan donations can enable creators with even modest audience sizes to earn substantial amounts. These direct fan payment models facilitate greater monetization of highly-engaged superfans, in contrast with ad-based models that reward scale and reach.

2020 December 17, Li Jin, “The Creator Economy Needs a Middle Class”, in Harvard Business Review‎