20 Celebrities You Didn't Know Appeared In Rick And Morty
8. John Oliver - Dr Xenon Bloom
First Appeared In Season 1 Episode 3 - Anatomy Park
In the episode, Anatomy Park, talk show host, John Oliver, plays Xenon Bloom - a sentient amoeba that co-founded a disease-themed amusement centre inside a homeless Santa. Not only is the title and story an unsubtle reference to Jurassic Park, Bloom's appearance and mannerisms are based on David Attenborough's character in the film, John Hammond. Despite sparing no expense on the amusement park, Bloom met his end after the diseases broke out and killed him.
Since Oliver appeared in the third episode of Rick & Morty, he has the distinction of being the first celebrity to star on the show.