Dr. David Nelson
| Gender | Male |
| Hair Color | Black |
| Occupation | Author |
| Voiced by | Trey Parker |
| First Appearance | With Apologies to Jesse Jackson |
| Last Appearance | With Apologies to Jesse Jackson |
Dr. David Nelson is a "little person" who visits South Park Elementary to teach the kids about sensitivity and the power of words. However, his powerful words don't quite get through to Cartman...