Big Name Fan

A Big Name Fan, commonly called a BNF, is a member of a particular group in fandom whose work, or knowledge about the fandom in question, is very well known.

Commonly, Big Name Fans might start off a popular Fanon idea, act as a pillar of stability, and so forth.

Examples of BNFs

 * Cassandra Claire - Cassie Claire started off many fanon ideas about Draco Malfoy, or at least popularized them.
 * Miss Cam - She founded the OFUs. Have you seen how many of those things there are?
 * Katie Sullivan a.k.a. Snowfur - creator of the Redwall Encyclopedia, personally approved by Brian Jacques himself.