Justin Roiland Morty, Rick Voice, Executive Producer Sarah Chalke Beth Voice Spencer Grammer Summer Voice Chris Parnell Jerry Voice Maurice LaMarche Ship Captain, Abradolph Lincler Guest Voice Aislinn Paul Nancy Guest Voice Cassie Steele Tammy Guest Voice Scott Chernoff Gear Head Guest Voice Alejandra Gollas Lucy Guest Voice Dan Harmon Birdperson Guest Voice, Executive Producer Lauren Hillman Guest Voice Echo Kellum Brad, First Mate Guest Voice Tom Kenny Tour Guide, Squanchy Guest Voice Chris Romano Slow Mobius, "Party!" Boy Guest Voice Kari Wahlgren Jessica, Girl Guest Voice