The show's first season consists of 11 twenty-two minute episodes. After airing the first six episodes, [adult swim] renewed the show for a second season. 
The show was based on a series of crudely animated short films for Channel 101 based on a Back to the Future parody "Doc and Mharti", known for their crude content, "The Real Animated Adventures of Doc and Mharti"; by Justin Roiland.
The show centers around the titular characters Rick and Morty. Rick is a mentally gifted, but sociopathic and alcoholic scientist and a grandfather to Morty; an awkward, impressionable, and somewhat spineless teenage boy. Rick moves into the family home of Morty, where he immediately becomes a bad influence.
- Rick: (voiced by Justin Roiland) - A genius scientist and alcoholic whose inventions and experiments serve as the basis for the episodes.
- Morty: (voiced by Justin Roiland) - Rick's impressionable grandson who is often dragged along on his grandfather's escapades.
- Jerry: (voiced by Chris Parnell) - Morty's insecure father, whose disapproval of Rick's influence on Morty only deepens his marital troubles with Beth.
- Beth: (voiced by Sarah Chalke) - Morty's holier-than-thou mother, a cardiac surgeon for horses.
- Summer: (voiced by Spencer Grammer) - Morty's angst-ridden older sister who occasionally joins Rick on his adventures.
- Jessica: (voiced by Kari Wahlgren) - A classmate of Morty's that he has a crush on.
- Mr. Goldenfold: (voiced by Brandon Johnson) - Morty's math teacher.
- Gene Vagina (Phil Hendrie) - The principal of Harry Herpson High School. He is good friends with Mr. Goldenfold.
- Brad (Echo Kellum) - A student at Harry Herpson High School. He is shown to be a jock who plays sports for the highschool (most likely football).
- Joyce Smith (Patricia Lentz) - Jerry's mother, Leonard's wife, and Morty's grandmother.
- Leonard Smith (Dana Carvey) - Jerry's father, Joyce's husband, and Morty's grandfather.
- Ethan (Dan Benson) - The boyfriend of Summer.
- Jacob (Echo Kellum) - A family friend of Jerry's parents, and is later revealed to be Joyce's lover.
- Mr. Meeseeks (Justin Roiland) - Creatures summoned by activating a Meeseeks Box, existing until they fulfilled the purpose they are assigned. However, as seen with the difficulty with fulfilling Jerry's wish, the Mr. Meeseeks he summoned and the others that follow go insane from existing for too long to the point of taking extreme measures to fulfill Jerry's request.
- Annie (Jackie Buscarnio) - A member and only survivor of Dr. Xenon Bloom's team working on the Anatomy Park. Morty has a crush on her.
- Snuffles, also known as Snowball (Rob Paulsen) - Morty's pet dog featured in the episode "Lawnmower Dog". Snuffles is a small, fluffy white-haired dog that experiences some trouble with being pottytrained until Rick develops an IQ-enhancing helmet for him at the request of Jerry.
|Screenshot||Episode||Title||Original airdate||Viewers (in millions)|
|1||"Pilot"||December 2, 2013||1.095|
|Rick moves in with his daughter's family and establishes himself as a bad influence on his grandson, Morty.|
|2||"Lawnmower Dog"||December 9, 2013||1.510|
|Rick helps Jerry out with the dog, Snuffles. Don't even trip about this episode because they also incept the dreams of Mr. Goldenfold.|
|3||"Anatomy Park"||December 16, 2013||1.302|
|On this Christmas-themed episode, Jerry forces the family to bond during the holiday. Rick shrinks Morty in size to enter his creation, Anatomy Park.|
|4||"M. Night Shaym-Aliens!"||January 13, 2014||1.476|
|Rick, Morty, and Jerry find themselves trapped in a life-like simulation by an alien race of intergalactic scammers known as the Zigerions.|
|5||"Meeseeks and Destroy"||January 20, 2014||1.610|
|Morty makes a bet with Rick that he can lead a fun, successful adventure. Jerry, Beth, and Summer summon various helpers named Mr. Meeseeks to help solve their problems.|
|6||"Rick Potion No. 9"||January 27, 2014||1.746|
|Morty asks Rick to brew him up a love potion to gain the affections of Jessica, but the potion fuses with an airborne flu virus and infects the worldwide population.|
|7||"Raising Gazorpazorp"||March 10, 2014||1.762|
|When Morty asks Rick to buy him a sex robot from a space pawn shop, it concieves his own half-alien son, leading Rick and Summer to investigate the robot's planet of origin.|
|8||"Rixty Minutes"||March 17, 2014||1.477|
|Rick installs a device within the family's TV set allowing them to watch shows from all possible realities, causing Jerry and Beth to contemplate their past decisions.|
|9||"Something Ricked This Way Comes"||March 24, 2014||1.543|
|Summer gets a job at a strange shop selling eccentric, cursed items, Jerry commits himself to helping Morty on a science project.|
|10||"Close Rick-counters of the Rick Kind"||April 7, 2014||1.750|
|Rick and Morty are imprisoned by a council of Rick's across alternate timelines for a crime they didn't commit, Jerry bonds with an alternate-reality Rick.|
|11||"Ricksy Business"||April 14, 2014||1.823|
|Rick hosts a party while Beth and Jerry are away.|