On Jerry's demand, Rick gives Snuffles, the family dog, an intelligence-enhancing helmet. This causes his parents to believe he is fine with his education, but this wastes the seeds, so Rick informs Morty that they need to go back and get more, while their aftereffects leave Morty writhing on the floor. Ultimately, the seeds briefly cause Morty to be highly intelligent, despite the fact that he missed a semester of school because he's been in adventures with Rick. However, Rick and Morty's cover is blown and they escape while engaging in a shootout with alien insect soldiers. After having breakfast with their family, Rick takes Morty to another dimension to collect seeds of "Mega Trees", which Morty is forced to hide in his own rectum to get past intergalactic customs. The bomb activates by itself and seems to be left unchecked, but ultimately it is shown that life on Earth remains intact. Rick lands the vehicle on Morty's demand and passes out. Rick, in a drunken state, takes his grandson, Morty, for a ride in his flying car and rambles on about how he plans to use a neutrino bomb to wipe out all life on Earth. See also: List of Rick and Morty episodes No. Other cast members of the season, who each have voiced one or more characters, include: Eric Bauza, Dan Harmon, Phil Hendrie, Brandon Johnson, Ryan Ridley, Kari Wahlgren, Melique Berger, Jess Harnell, Smith Harrison, Maurice LaMarche, Rob Paulsen, Jesse Mendel, Dan Benson, Jackie Buscarino, Echo Kellum, Patricia Lentz, Rob Schrab, Gary Anthony Williams, Steve Agee, Tom Kenny, Vatche Panos, Cree Summer, Reagan Gomez, Megan Adams, Will Jennings, Finnegan Perry, Jeff Bergman, Adam Ray, Scott Chernoff, Rich Fulcher, Tress MacNeille, Nolan North, Alejandra Gollas, Lauren Hillman and Chris Romano. Cassie Steele as Tammy, Summer's friend from school.Aislinn Paul as Nancy, Summer's unpopular classmate.
Maurice LaMarche as Abradolf Lincler, a human hybrid with the mixed DNA of Adolf Hitler and Abraham Lincoln.Alfred Molina as Lucius Needful, the Devil and owner of a vintage antique shop.Virginia Hey as a female Gazorpian inside the stone floating head.Richard Christy as a stone floating head controlled by female Gazorpians.Claudia Black as Ma-Sha, ruler of the planet Gazorpazorp.David Cross as Prince Nebulon, the alien leader of the Zigerions.Xenon Bloom, an amoeba and co-founder of the Anatomy Park. Dana Carvey as Leonard Smith, Jerry's father.