Rick and Morty are both voiced by Justin Roiland.¹⁾

Roiland had planned for the program to run in eleven-minute portions, but Adult Swim insisted on half-hour episodes.²⁾

Toon Boom Harmony is used to generate the show's animation, while Adobe Photoshop is used to create all of the backdrop art. Adobe After Effects is used for post-production.³⁾

The show's two titular characters are based on a pair of characters from co-creator Justin Roiland's animated short The Real Animated Adventures of Doc and Mharti.rickandmorty⁴⁾

Justin Roiland produced the House of Cosbys, a tiny animated program that resulted in multiple stop and desist letters from Bill Cosby's attorneys. To avoid a lawsuit, he decided to make a crude Back to the Future spoof called The Real Animated Adventures of Doc and Mharti, with his two characters dubbed Doc Smith and Mharti McDonhalds. When Roiland began editing the audio for this, he fell in love with the voices he'd done for the two characters and decided to abandon his protest in order to further develop the characters, eventually transforming them into Rick and Morty.⁵⁾

The opening and theme tune of Rick and Morty are a spoof of Doctor Who and Tintin.⁶⁾

Rick rejoined the Smith family one month before the events of the first episode of the show.⁷⁾

Earth Cesium-137 is the universe in which most of the events on Earth take place. That's why Rick and Morty are frequently referred to as “Rick C-137” and “Morty C-137”.⁸⁾

The second episode of the first season (Lawnmower Dog) is based on a pilot called DogWorld made by Justin Roiland for Cartoon Network, in which two youngsters discover a doorway to a realm populated by sentient dogs with human pets.⁹⁾

Also in this episode, Rick refers to Snuffles as “Ruffles”, which is the name of the dog family's human pet in DogWorld.¹⁰⁾

Snowball's accountant in Lawnmower Dog is voiced by Maurice LaMarche, who also played The Brain in Pinky and The Brain.¹¹⁾

Roiland improvises a lot on set when recording the show's dialogue, which he believes makes the lines more natural.¹²⁾

Because Rick spends the most of his time inebriated, Roiland tried method acting and going drunk before recording Rick's conversation. It didn't go well, and he barely finished recording!¹³⁾

Have you ever thought Rick's daughter Beth sounds familiar? That's because she's voiced by Sarah Chalke, who has previously portrayed Elliot in Scrubs, Stella in How I Met Your Mother, and Amy in Backstrom.¹⁴⁾

Each of Rick's distinctive burps is a genuine burp.¹⁵⁾

Rick's burping arose as a result of Roiland accidently burping in the middle of a phrase while portraying Doc in The Real Animated Adventures of Doc and Mharti. He said it was so nasty and amusing that he decided to do it again for a couple more lines.¹⁶⁾

Although he does all of the burps, Roiland has previously stated that it is not an easy task for him. He sits in the studio with a can of light beer and a bottle of water, waiting for them to come spontaneously because he can't force them or burp on order. “Just leave it rolling, because I don't know when this burp is coming!” he warns the engineers recording the concert.¹⁷⁾

Justin Roiland has also stated that he is envious of Sarah Chalke's ability to burp on command.¹⁸⁾

Rick never wears a seatbelt in autos, but the other characters do.¹⁹⁾

Spencer Grammar, who plays Summer, stated that if she could go back in time, she would assassinate Hitler.²⁰⁾

Rick, Bird Person, and Squanchy were in a rock band named “The Flesh Curtains”, according to the Season 2 episode Get Schwifty.²¹⁾

Over the course of the show's existence, a slew of notable guest stars have provided voices for Rick and Morty. Stephen Colbert, Dana Carvey, Claudia Black, Nathan Fillion, Susan Sarandon, Joel McHale, Rich Fulcher, Christian Slater, and Danny Trejo are just a few of the noteworthy names.²²⁾

The Zigerions, extraterrestrial fraudsters pursuing Rick's concentrated dark matter formula, are introduced in Season 1's episode Night Shaym-Aliens! David Cross, who portrayed Tobias Fünke in Arrested Development, voiced their commander, Prince Nebulon (Yes, a fraudulent Zigerion Prince). The Zigerions and Tobias Fünke are both extremely uncomfortable with nudity.²³⁾

Unity, a hive-mind creature that Rick used to date, is introduced in the Season 2 episode Auto Erotic Assimilation. Rick commissions Unity to develop a TV program for him that is a rip-off of Dan Harmon's show Community.²⁴⁾

The Rick and Morty team was influenced by more than Rick's profanity in Breaking Bad. The notion of Pickle Rick was inspired by Breaking Bad's Season 2 episode 4 Days Out, in which Jesse and Walt are lost in the desert and Walt exhibits amazing creativity to work with little and save them both.²⁵⁾

Bryan Cranston of Breaking Bad auditioned for the role of Jerry early in the production process.²⁶⁾

Rick's surname, Sanchez, appears just once in an episode title, in Season 2's Big Trouble In Little Sanchez.²⁷⁾

Justin Roiland and Chaos Chaos (who did Can You Feel It? from Season 2's Auto Erotic Assimilation) collaborated on an unique song called Terry-Folds for Season 3's Rest and Ricklaxation. This song is heard as Morty switches on the radio in Rick's car on their way home from their spa vacation, as well as during the episode's credits.²⁸⁾

Many fans of the show think it is based in the same universe as Alex Hirsch's animated series Gravity Falls. Hirsch and Roiland shared a Disney workstation and agreed to refer to each other. During the pursuit sequence, as Rick creates a slew of portals to escape his pursuers, a pen, notebook, and cup emerge from one of them. Stan loses these goods through a portal in Gravity Falls.²⁹⁾

When Beth and Jerry go to counselling in the Season 2 episode Big Trouble In Little Sanchez, an image of Bill Cipher, the adversary of Gravity Falls, can be seen on a monitor.³⁰⁾