Robby & Kevin are two prisoners kept in a hole underneath a spooky old mansion in "The Census of the Lambs".
When Stan tries to take the census at the mansion, he is knocked cold and thrown into the pit with Robby and Kevin. Gregarious Kevin explains that it isn't his first time in such a pit, having been kidnapped in Indiana. When he notes that Stan had just missed two other occupants of the pit, Rich & Carl, Robby notes that they were skinned by the 'master' and the same fate will come to them. Kevin tries to make him look on the bright side of things, but when Hayley also ends up in the pit in search of Stan, Robbie has already been taken. Stan and Hayley are eventually rescued by Ice-T, who used his TV detective skills to track them down. But when Kevin mentions loving his song "Cop Killer", he leaves him behind.
Kevin is voiced by Andrew Daly. Robby is voiced by Scott Adsit.