|This needs a stretch.|
Needed: History is incomplete.
A Pup Named Scooby-Doo
The gang went camping at the reservation once, but when they got there, they were menaced by the Totem Spirit, who supposedly showed up whenever his sacred land was threatened. It turned out it was really Mr. Ryan pretending to be the spirit in order to scare people away while he stole ancient Indian artwork. 
- The exact location is unknown. Warren referred to the reservation as being similar to Coolsville, implying that it wasn't in the city.