They meet once every two weeks and swap stories about villainy.
Drakken is from Kim Possible.
Dr. Horrible from the videoshow of the same name.
Gru from Despicable Me.
Syndrome from Incredibles.
Megamind is a title 'ditto.'
Lex Luthor from Superman: The Animated Series and Justice League. (I really like this version of him.
Dexter's Laboratory is also a title 'ditto.'
Disney, Joss Whedon, Illumination Entertainment, Disney/Pixar, Dreamworks, DC, and Cartoon Network.