<Li> Phillip Jacobs--Host of Personal Space Show . Really cares about his personal space . </Li> <Ul> <Li> The Zigerions--A race of highly intelligent alien scammers who routinely abduct Rick and place him into virtual simulations in an attempt to get his recipe for concentrated dark matter . They are very uncomfortable with nudity, though they did manage to create an accurate model of Morty, complete with genitalia . Having known from the beginning that he was in a double - layered simulation and tired of dealing with the Zigerions, Rick gives them a fake recipe for concentrated dark matter which causes their ship to explode . <Ul> <Li> Prince Nebulon (voiced by David Cross)--The Prince of the Zigerions . The Zigerions being uncomfortable with nudity is a reference to Cross' character on Arrested Development having a similar issue . </Li> <Li> Kevin (voiced by Dan Harmon)--A nerdy - looking Zigerion who was made to spy on Morty while he was nude in order to create an accurate representation of his genitals for their simulation . </Li> </Ul> </Li> <Li> The Plutonians--Citizens of the celestial dwarf planet Pluto . Nearly all Plutonians do not want to believe that their home is no longer a planet . Their first major appearance is in "Something Ricked This Way Comes". The Plutonians earlier appeared multiple times in "M. Night Shaym - Aliens!", presumably as test subjects for the Zigerion simulations . <Ul> <Li> King Flippy Nips (voiced by Rich Fulcher)--The King of the Plutonians . </Li> <Li> Scroopy Noopers (voiced by Nolan North)--A Plutonian scientist and outcast who is later revealed to be King Flippy Nips's son . </Li> </Ul> </Li> <Li> Unity's Hosts--An unnamed race of blue - skinned humanoid aliens whose minds Unity has taken over and assimilated into her collective conscience . As Unity's control over them begins to weaken due to Rick's influence, they begin a race war amongst themselves due to having differently shaped nipples . </Li> <Li> Alien Parasites--The Alien Parasites can take the forms of wacky side characters and insert themselves into peoples' memories to convince them that they've always known them, parodying old sitcoms and their tendency to shoehorn in new characters to boost failing ratings . They multiply very quickly and must be contained to prevent them from taking over and / or destroying the world . Their only weakness is that they can't create negative memories, since they feed on the chemicals the brain produces from positive feelings . The Smith Family take advantage of this and slay all the Alien Parasites . <Ul> <Li> Amish Cyborg--An (ironically - themed) Amish cyborg, unlike the other parasites, it seems that at least part of his guise (the cybernetic implants) were an actual part of his body </Li> <Li> Baby Wizard--An infant wizard who supposedly hooked up the Duck with Muscles with his future wife . </Li> <Li> Bigfoot </Li> <Li> Cleopatra </Li> <Li> Cousin Nicky (voiced by Ryan Ridley)--A supposed relative of the Smith family from Brooklyn . He is an embodiment of various New Yorker stereotypes and his catchphrase is "I'm walkin' here!" (a line used by Dustin Hoffman's character Enrico Rizzo in "Midnight Cowboy"). </Li> <Li> Duck Guy or Duck with Muscles--An unnamed rubber duck with muscular arms . Baby Wizard was said to have hooked Duck with Muscles up with a woman that would eventually become his wife . </Li> <Li> Elvis Impersonator--An Alien Parasite in the form an Elvis Presley impersonator . </Li> <Li> Frankenstein's Monster (voiced by Kevin Michael Richardson)--A variation of the monster from Frankenstein who is a member of the Smith family . He is said to be a veteran of the Vietnam War, having served with Rick . </Li> <Li> Ghost in a Jar--A tiny green ghost that resides in a jar . Rick states that he is good at explaining obscure jokes for people that do not get them . It was mentioned that his life was saved by Reverse Giraffe in Vietnam . His jar is actually the lower half of his body . </Li> <Li> Hamurai (voiced by Kevin Michael Richardson)--A samurai that wears armor made of ham, steaks, sausages, and bacon strips . It was mentioned that he went to college with Reverse Giraffe . </Li> <Li> Mr. Beauregard (voiced by Tony Barbieri)--The Smith family's butler . In one flashback he dresses up as Morty's date to the prom and fights Hitler in another . </Li> <Li> Mrs. Refrigerator (voiced by Kevin Michael Richardson)--A female anthropomorphic refrigerator . She is one of the first parasites who is found out by the family, and attempts to pass a roller coaster ride off as a negative memory in a state of panic, only to try and run once Beth points out the flaw in her statement . </Li> <Li> Pencilvester (voiced by Tom Kenny)--An anthropomorphic pencil . Rick takes a liking to this particular parasite and instructs Morty to kill him as he is unable to bring himself to do it . </Li> <Li> Photography Raptor--A Utahraptor that is constantly taking pictures and can't communicate verbally . </Li> <Li> Reverse Giraffe (voiced by Keith David)--An eloquent - speaking giraffe with a short neck, stubby legs, and a long body . He stated that he went to college with Hamurai, saved Ghost in a Jar's life in Vietnam, and had been a shoulder for Beth to cry on . </Li> <Li> Sleepy Gary (voiced by Matt Walsh)--A tired man in pajamas and a nightcap who is portrayed as Beth's husband and Jerry's best friend / secret lover who yearns to divorce his wife so that he can be with Jerry . </Li> <Li> Tinkles (voiced by Tara Strong)--A magical flying ballerina lamb with a rainbow unicorn horn who is Summer's imaginary friend . She is stated to live in "Never - Past - Bedtime Land" with numerous similar creatures like a bear parka - wearing bird, a butterfly / sunflower hybrid, a Chowder look - a-like, a cloud yeti, an Easter Bunny / Monkey hybrid, a headphones - wearing dragon, a hoodie - wearing slug, a sunglasses - wearing strawberry, a sweatband - wearing star, and a winter - wear turtle . </Li> <Li> Uncle Steve (voiced by Tony Barbieri)--The supposed older brother of Jerry . </Li> <Li> William Shakespeare </Li> <Li> Unnamed characters--The forms of the alien parasites that were unnamed . These forms consist of an Astronaut, a Bearded Lady, a British Guard, a Burglar, a Caveman, a Chef, a Flamingo, a Fruit Hat Girl, a Giant Robot, a Girl Robot, a Girl Scout, a Gnome, a Harlem Globetrotter, a humanoid bear with kidneys that would be compatible to Beth's, a humanoid catfish, a humanoid fox, a humanoid sun, a humanoid unicorn, a Japanese businessman, a Lucky Cat, a Mexican Man, a Mr. Peanut look - a-like, a mushroom head, a nun, a party hat - wearing snake, a pink balloon animal, a rooster, a Scottish "Braveheart" warrior, a sea captain in rain gear, a small cowboy riding a dog, a snorkel kid, a space monkey, and a trashcan - wearing creature . </Li> </Ul> </Li> <Li> The Cromulons (voiced by Justin Roiland)--A race of planet - sized heads (who, for some reason, all look like bald versions of Rick's head) who "feed off the talent and showmanship of less - evolved lifeforms". They transport planets to the expanse of the universe they inhabit and make the residents perform on a talent competition show that they run called Planet Music, with planets that lose or get disqualified being disintegrated by a massive laser cannon . When Rick and Morty win the competition, the Cromulons declare their song the best they've ever heard and decide to end their show after 988 seasons . The general population, meanwhile, mistakes them for gods and begins to worship them as such . </Li> </Ul> <Li> The Zigerions--A race of highly intelligent alien scammers who routinely abduct Rick and place him into virtual simulations in an attempt to get his recipe for concentrated dark matter . They are very uncomfortable with nudity, though they did manage to create an accurate model of Morty, complete with genitalia . Having known from the beginning that he was in a double - layered simulation and tired of dealing with the Zigerions, Rick gives them a fake recipe for concentrated dark matter which causes their ship to explode . <Ul> <Li> Prince Nebulon (voiced by David Cross)--The Prince of the Zigerions . The Zigerions being uncomfortable with nudity is a reference to Cross' character on Arrested Development having a similar issue . </Li> <Li> Kevin (voiced by Dan Harmon)--A nerdy - looking Zigerion who was made to spy on Morty while he was nude in order to create an accurate representation of his genitals for their simulation . </Li> </Ul> </Li> <Ul> <Li> Prince Nebulon (voiced by David Cross)--The Prince of the Zigerions . The Zigerions being uncomfortable with nudity is a reference to Cross' character on Arrested Development having a similar issue . </Li> <Li> Kevin (voiced by Dan Harmon)--A nerdy - looking Zigerion who was made to spy on Morty while he was nude in order to create an accurate representation of his genitals for their simulation . </Li> </Ul>

Who voices the characters in rick and morty