PERFORMER Jason Jones DEBUT 2011 Nikola Messla is a Grouch professor at "Putrid University" (P.U.) who appears in a 2011 episode of Sesame Street. Oscar the Grouch takes the online Grouchology class from the college, learning how to be a Grouch Scientist. Messla instructs him at his trash can via a webcam, aided by the Pesties. His name is a reference to Nikola Tesla, a well known scientist and inventor. Retrieved from "https://muppet.fandom.com/wiki/Nikola_Messla?oldid=1097650" Categories: Sesame Street Characters Sesame Street Human Characters School Community content is available under CC-BY-SA unless otherwise noted.