For other uses, see John (disambiguation).

Jonathan "John" Hansen, also known as John 'Nancy' Hansen, voiced Mr. Slave, the former boyfriend of and assistant to Mr. Garrison. He also voiced the Busy Beaver Truck Driver for "Butters' Very Own Episode" and Anthony Webster in "Fort Collins".

In addition to voicing Mr. Slave, he was also on the show's production team as a post-production supervisor. Currently, he is on the team as a production supervisor for more recent episodes.


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