Justin Roiland Morty, Rick Voice, Executive Producer Sarah Chalke Beth Voice Spencer Grammer Summer Voice Chris Parnell Jerry Voice Tony Barbieri Uncle Steve, Mr. Beauregard Guest Voice Keith David Reverse Giraffe Guest Voice Tom Kenny Nazi, Pencilvester Guest Voice Kevin Michael Richardson Frankenstein, Hamurai, Mrs. Refrigerator Guest Voice Ryan Ridley Cousin Nicky Guest Voice Jevin Smith Rapper Guest Voice Tara Strong Tinkles, Doctor Guest Voice Matt Walsh Sleepy Gary Guest Voice Dan Harmon Executive Producer