Janitor Randy was a janitor at the Columbia University classics department.
Throughout the Series[]
In the Season Six episode, The Bimbo, Jake Peralta and Raymond Holt meet Janitor Randy when they go to Columbia University to investigate the stealing of three antique coins.
While investigating the archive room where the coins were stolen the Dean of the school, Wesley Allister, brought in Randy, who had come forward with one of the coins. He said he was cleaning Professor Port's office when he saw something shiny sticking out from underneath a notepad that turned out to be one of the coins.
While the dean assumed the criminal was Professor Port, Holt and Peralta followed the lead they had found during their investigation; a footprint left on a drawer the thief used to get up to the coins. When they discovered the shoe print matched the shoes of Wesley Allister, they accused him of the crime.
The shoes were actually given out as a holiday gift to the classics department faculty, which Kevin and Holt had to leave early. Janitor Randy used them so that he could frame a faculty member. Holt and Peralta eventually figured it out after they realized they had dismissed Janitor Randy because he didn't have a classics background.