The premise of "Benderama" is the grey goo theory, an end-of-the-world scenario in which out-of-control self-replicating robots consume all matter on Earth while building more of themselves.
"Benderama" received mostly positive reviews from critics, many of whom praised Patton Oswalt's guest appearance and noted that it was an improvement over the preceding episode "Neutopia".
Before they can do so, the Planet Express crew and the duplicates are sent to deliver a shipment of personal hygiene products to an ugly giant alien humanoid who lives in a cave.
He endures the crew's comments about his appearance until Fry inadvertently insults his mother, causing him to lash out and nearly destroy the ship before it escapes.
At this point, the giant alien arrives on Earth to apologize for his earlier outburst, even though the crew keeps drunkenly insulting him and Zapp Brannigan tries to destroy him with a tank.
Unable to get hold of the therapist who has been helping him deal with his anger issues, the alien flies into another rage and starts tearing up the city.
Before its airing, the first act of the episode was read by the show's voice actors at Futurama's 2010 San Diego Comic Con panel.
[1] "Benderama" features an episode of "The Scary Door", Futurama's ongoing parody of anthology television series The Twilight Zone.
"[5] Blair Marnell of CraveOnline wrote: "'Benderama' had a lot of fun moments that helped negate the bad taste left behind by 'Neutopia'."