Mr. Stempe is an one-time character appearing in the "All Grown Up!" episode "Rats Race" and he is voiced by Jeff Richards. Gallery You can find Mr. Stempe gallery here. Retrieved from "https://rugrats.fandom.com/wiki/Mr._Stempe?oldid=157183" Categories: Characters One-time characters All Grown Up! All Grown Up! characters One show characters Humans Males Adults Grownups Employed characters Teachers Community content is available under CC-BY-SA unless otherwise noted.