Season 2

Season 2 of Rick and Morty features ten episodes which aired from July 26, 2015 to October 4, 2015.

Main
These are the characters present throughout the majority of the episodes within the second season:
 * 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.

Recurring
These are the characters present in more than one episode within the second season:
 * 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.
 * Birdperson: (voiced by Dan Harmon) - An interdimensional human-bird hybrid from a planet called Bird World who is Rick's long time best friend.
 * Tammy Gueterman: (voiced by Cassie Steele) - Summer's friend from school who has now left the planet Earth to live with her new boyfriend, Birdperson.
 * Squanchy: (voiced by Tom Kenny) - A cat-like alien who's another long-time friend of Rick's. Squanchy is a typical crazy, drunken, sex-crazed goof off who speaks in a language where the word "Squanch" is used in the place of other words.
 * Mr. Poopybutthole: (voiced by Justin Roiland) - An ambiguously existent guy who's either a long-time friend of the Smith family or an evil alien parasite who is bent on taking over the planet.

Characters of the Day
These are the characters present in one episode within the second season:
 * Fart: (voiced by Jemaine Clement) - A gaseous being, unjustly imprisoned in an interdimensional space prison, who communicates through telepathy.
 * Unity: (voiced by Christina Hendricks) - Rick's crazy and care free ex-girlfiend. She is a hivemind who communicates through an entire planet of aliens.
 * Beta-Seven: (voiced by Patton Oswalt) - Another hivemind with a romantic interest in Unity.
 * Zeep Xanflorp (voiced by Stephen Colbert) - A wise-ass alien that lives inside of Rick's car battery.

Episodes
This is a list of all of the episodes of the second season of Rick and Morty. The episodes are listed in the order that they aired.