A person who is so obsessed with the band Creature Feature, more notably Curtis Rx, that they become ghoul like in their behavior.

Fanghouls are also the Creature Feature equilivant of Slipknot's Maggots and Five Finger Death Punch's Punchers. This definition may also fit for a Curtis Rx Fangirl who makes herself seem normal by calling her a fanghoul and broadening her liking with other fanghouls. Fanghoulism is a term that fits both genders, however.