Jessica McKenna and Fred Tatasciore, the actors who play Lennon and Gluko respectively, improvised most of the short songs/raps that appear in many episodes, including this one.
Paul Scheer, who voices Raymond the Cloud, hosts the popular movie podcast "How Did This Get Made?" with wife June Diane Raphael (the voice of Sheena in episode 107A) and Jason Mantzoukas.
Paul Scheer, the voice of Raymond the Cloud, created the Adult Swim parody series "NTSF: SD: SUV::."