Fan

Fans were people who had a strong interest in something or somebody.

A fan of the Doctor attended the Annual Gallifreyan Doctor Who Con where they asked the first six incarnations of the Doctor and Dr. Who about the most evil foe they had encountered over the years. (NOTVALID: Doctor Who? 95)

The Cyber Fan, a variant of Cyberman, asked the Seventh Doctor for his autograph. (NOTVALID: Doctor Who? 204)