|Anti-Cosmo Anti-Julius Anti-Cosma|
|Name||Anti-Cosmo Anti-Julius Anti-Cosma|
|Origin||The Fairly OddParents|
|Relatives||Anti-Wanda (wife), Foop (son), Grim Jr. (godchild)|
|Enemies||Timmy Turner, Cosmo, Wanda|
|Occupation(s)||Godparent, Ring Leader of the Anti-Fairies|
|Residence||Anti-Cosmo's Castle, Anti-Fairy World|
Grim Tales From Down Below
He was mentioned by Grim Jr. that he was his fairy godfather in chapter 3.
Anti-Cosmo has a blue and black color scheme consisting of a blue bowler hat in place of a crown, fangs, and bat wings like those of all Anti-Fairies. He wears a monocle over his right eye which he cannot see without, and wears a kind of coat or suit and, unlike Cosmo, Anti-Cosmo speaks intelligently with a cultured British accent. He is married to Anti-Wanda. Anti-Cosmo's castle is most likely not open to anyone except those Anti-Cosmo permits such as when the Pixies temporarily became his allies in "Fairly Odd Baby". Since Cosmo used to be the last Fairy baby ever born, Anti-Cosmo may have been the last Anti-Fairy baby ever born until Anti-Wanda gave birth to Foop.
Since all Anti-Fairies are to their Fairy counter-parts, Anti-Cosmo is the complete opposite of Cosmo. While Cosmo is kind, caring, and amazingly dumb, Anti-Cosmo is an evil genius, criminal master mind, and is smart. Apparently he is the ringleader of the Anti-Fairies, and after he is permanently freed from Jorgen Von Strangle's captivity, he and his race move to Anti-Fairy World where he rules over them from his castle. Like all Anti-Fairies, Anti-Cosmo's primary goal is causing bad luck among humans.