Guest Stars Cassie Steele voices Tammy Gueterman Maurice LaMarche voices Abrodolph Lincoler Aislinn Paul voices Nancy Maurice LaMarche voices Ship Captain Co Starring Kari Wahlgren voices Jessica Dan Harmon voices Birdperson Tom Kenny voices Squanchy Scott Chernoff voices Gear Head Lauren Hillman voices Additional Voices Dan Harmon voices Davin Echo Kellum voices Brad Tom Kenny voices Tour Guide Kari Wahlgren voices Girl Echo Kellum voices First Mate Chris Romano voices 'Party!' Boy Chris Romano voices Slow Mobius Alejandra Gollas voices Lucy