Originates from Stargate SG-1 fanfiction and similar to Muldertorture in X-Files fandom. The large adult fanbase even led to one of the first Internet-based fandom cultures. The concept of fandom began with sports fans. Costuming spread with the science fiction conventions and the interaction of fandom. He also talks to fans about presenting furry fandom to the public. The character has become extremely popular in anime and manga fandom. Roleplaying is a central feature of the Harry Potter fandom. Gambaccini was active in the realm of comic book fandom. There has been similar criticism to the Japanese "yaoi" debate in the English-speaking fandom. Furthermore, fanboys also deal with issues of gender discrimination in relation to their fandom interests. This led to a backlash from members of the "Final Fantasy" fandom. There has been a long history of tolerance of LGBT people in SF fandom. "Danmei" emerged from fiction produced by an underground fandom. "Steven Universe" has a large, active fandom. Examples of sexual aspects within furry fandom include erotic art and furry-themed cybersex.