Mr. Donaldson is a member of the Tourette's Tolerance and Understanding Foundation. His sole appearance was in the episode "Le Petit Tourette". He labels Kyle Broflovski as a bully, as he was unaware that Eric Cartman is faking his Tourette's Syndrome.
Mr. Donaldson has short, brown hair. He wears a white shirt under a brown suit, a green tie, and dark gray pants.
As a sufferer of Tourette's himself, he has his own verbal tic - randomly saying the words "piss" and "ass" (particularly spouting things about things going in or out of his ass). He also seems very devoted to teaching others about Tourette's syndrome, even to the point of ignoring any evidence that someone would be faking it, as well as claiming that anyone who thinks otherwise is a "bully". He appears to be unintelligent and narrow minded, as he is foolish to regard Kyle Broflovski as a so-called "bully", and to believe Eric Cartman genuinely suffered from Tourettes syndrome, when he was obviously faking it.
|Minor Characters from Season Eleven|
| Allison | Angelina Jolie | Baahir Hassan Abdul Hakeem | Bill Donohue | Bono | Bradley | Chris Hansen | Dr. David Nelson | Mr. Donaldson | Glen | Hare Club for Men | Hillary Clinton | Jake Jabs | Jay Cutler | Kelly Mayfield | Mayor of Imaginationland | Nelly | Patty Nelson | Pope Benedict XVI | Professor Teabag | Queen Elizabeth II | Ron Zappolo | Thad | Thomas | Travis Mayfield | The Ugly Kids |