Sesame Street had Oscar the Grouch.

Dudley the Dragon had Mr. Crabby Tree.

Yes, this unhappy crabapple tree had good reason to be unhappy:  He was the only apple tree in the forest.  A nearby orchard had been cut down to make room for a highway.  Those trees were his friends!  Not only that, but people were abusing wood byproducts, like wasting paper.  Nobody visited him except Didi the Woodpecker who jackhammered his bark all the time.  No wonder he was so crabby.  Hmph.

Crabby’s catchwords were usually “What th—?” and “Don’t touch the bark!” and a raspy laugh that went, “Hehhhhhhhhhhhhh.”  And he would instantly fall asleep with a snore that ended with a “meenymeenymeenymeeny.”  Or something like that.

One time, Dudley and the gang saved him from being chopped down by a nutcase who called himself the King of All Living Things. Even so, Crabby Tree tried to sour everyone’s Christmas by giving out poisoned apples—the kind that made people crabby.  But the persistent duh-ragon managed to make him sorry for his misdeed, and together they restored everyone’s holiday cheer.

That Crabby Tree was a good fellow for the remainder of the series, even if he was, well, crabby.