|Voiced by||Trey Parker and Matt Stone|
In one potential distant future, Americans evolve into a hairless yellowy light-brownish whiteish uniform mix of races where ethnicity and race are no longer issues, using a language that is blended from English, Chinese, Turkish and all other world languages. This over-populated society creates a lack of jobs and therefore devalues currency until billions of dollars is relatively little. A few brave souls create a time machine to come back to the present to work at Wendell's Burgers and make small amounts of money to put into a savings account to build interest for a thousand years to feed their families. When it works, others begin coming back until Future people overrun the town entirely.
- Goobacks (s08e06)
- They are based on illegal Latino immigrants, who have been a major issue in United States politics for decades - the nickname 'Gooback' is based on 'wetback', a derogatory term referring to immigrants who cross the Rio Grande.