Here's the cast of 'Rick and Morty' and where you might have seen them before

"Rick and Morty" follows the extraterrestrial adventures of mad scientist Rick Sanchez and his grandson Morty Smith.Adult Swim

• "Rick and Morty" is back, but with new cast members.
• The show's two main characters have new voice actors following the firing of Justin Roiland.

"Rick and Morty" is back, but this time with new cast members.

Season seven of the hugely popular animated science fiction sitcom premiered on Adult Swim on Sunday, during which the broadcaster revealed the two new voice actors for its titular characters.

Justin Roiland, the show's cocreator, had previously voiced Rick Sanchez and Morty Smith, but was fired by Adult Swim earlier this year.

Read on to find out who has replaced Roiland, as well as who voices the series' other prominent characters.