Anti-Cosmo Anti-Julius Anti-Cosma (simply known as Anti-Cosmo) is one of the major antagonists in the Fairly Oddparents series, erving as one of the two main antagonists of the crossover special The Jimmy Timmy Power Hour 2: When Nerds Collide (alongside Professor Calamitous), and one of the main antagonists of the 2008 film, Fairly OddBaby. He is the Anti-Fairy counterpart of Cosmo Cosma. Like all Anti-Fairies, Anti-Cosmo has the opposite personality of Cosmo, being very smart unlike his opposite. He is the husband of Anti-Wanda and the father of Foop.