Grump

 is a fictional character of a cartoon in the The Fairly OddParents universe. He's the main character of a Holiday special that aired during Wishmas.

Character
He's the main character of the Wishmas special "How the Grump Stole Wishmas",a reference to How the Grinch Stole Christmas.He looks like the popular christmas character "Grinch",but is purple instead of green.

Background
During Wishmas Eve ,Timmy was trying to make Santa gets back to North Pole and brings Christmas back, so he turned on the TV to cheer Santa and the Elfs up, but he just found a TV news talking good about Wishmas and then he changed to a cartoon channel.There, a version of How the Grinch Stole Christmas was on, but instead Christmas, it was about Wishmas, and instead starring "Grinch" it was starring Grump. On the few scenes of the show that were shown, we can see that he tried to ruin Wishmas stealing a giant mailbox.There should be all the letters sent to the Magic Mailman. At the end of the show, Grump becomes good and a sweet person.

Trivia
Grump is a parody of "Grinch" from How the Grinch Stole Christmas.