The Fairly T.U.F.F. Phantom is a crossover on the three Nickelodeon shows created by Butch Hartman, The Fairly Oddparents, Danny Phantom and T.U.F.F. Puppy.
The special begins in Petropolis. Verminious Snaptrap is buliding an interdimensional device so he can rule more than one world. But than Dudley Puppy and Kitty Katswell crashes in. Than Dudley trips on the device and it brings Dudley, Kitty and Snaptrap to Dimsdale. Timmy, Cosmo, Wanda, Poof and Sparky comes across Dudley, Kitty and Snaptrap and they thought they were freaks and Timmy and the others were shocked to see talking animals. Then Crocker appeared and when he sees Dudley, Kitty and Snaptrap he believes this is the work of "FAIRLY-ODD-PARENTS". After he saided crazy, he destroys it and that brought, Dudley, Kitty, Snaptrap, Timmy, Cosmo, Wanda, Poof and Sparky to Emity Park. They were about to be captured by Skulker who was defeated by Danny Phantom. Then, Dudley and the others and Timmy and the others realise they have known by the people of Emity Park for they're cartoon characters of The Fairly Oddparents and T.U.F.F. Puppy. But to make things worse, Vlad Plasmius who appears to survive the Disateroid joins forces with Snaptrap and Crocker to rule all worlds, so it's up to Timmy Turner, Danny Phantom and Dudley Puppy to save the worlds.
- Butch Hartman - Himself
- David Kaufman - Danny Phantom
- Jerry Trainor - Dudley Puppy
- Tara Strong - Timmy Turner, Princess Mandie, Britney Britney, Ember McLain, Penelope Spectra, Star
- Grey Delisle Griffin - Vicky, Veronica, Tootie, Sam Manson, Kitty Katswell, Zippy
- Rickey D'Shon Collins - Tucker Foley
- Rob Paulsen - Jack Fenton, Box Ghost, Technus, Bird Brain
- Kath E. Soucie - Maddie Fenton, Lunch Lady Ghost, Youngblood
- Colleen O'Shaughnessey - Jazz Fenton