We've all run into some strange fan sites in the dark corners of the Internet. Where there is an obscure reality star or a sub-standard athlete, there is someone waiting in the wings to throw animated GIFs and a scrolling banner on a website in their honor. Obsessive fans come in many forms, from Twilight-loving tweens to reality television-obsessed grandmothers. Most of them are a little unhinged; it's almost a requirement—but these webmasters bring a little something extra to their crazy digital corner of the world. A select few of these people have interests so specific, a vision so grandious, or fetishes so perverse, that their fan sites stand out as weirder than the rest of their incredibly strange brethren. From neo-Nazi nerds to sexually awakened Sonic the Hedgehog fans, here are the 15 Weirdest Fan Sites Online.