[[Keroro Gunso]] fanfiction ''[http://tvtropes.org/pmwiki/pmwiki.php/FanFic/YinAndYangSeries[Yin and Yang Series (Fanfic)|Yin And Yang]]'' by author jlucydaisuke is filled with so much characters that a separate page is necessary for all the tropes they have. Also, it's a good reference sheet for notable characters.