SpongeBob watches a scary movie titled Night of the Robot, in which robots take over the world at night with Gary, and is terrified despite telling Gary that scary movies don't freak him out. He begins fearing of a robot invasion, even asking Gary if he is a robot, and has a nightmare where robots are taking over the world and are chasing him. The next day at work, he is very paranoid and is under the impression that robots are "everywhere" (one turning out to actually be a trolley full of sea potatoes, and another a red light that was actually the warning light for the fat).
He later sees Mr. Krabs "speaking" in a robot language (actually humming to a song called "Electric Zoo" on the radio and arguing to find the tune to the song) and wearing batteries in his pocket (his radio broke and he was planning to give the batteries to Pearl for her Christmas present), and suspects that he is a robot impostor. SpongeBob calls Mr. Krabs to show Squidward he is a robot. First, he tries to test his sense of humor, so Squidward tells a joke to Mr. Krabs but he does not laugh but tells Squidward that he is not paying him and SpongeBob to do stand-up comedy and leaves.
A moment later, SpongeBob calls him again and tells him Squidward's father never hugged him. Mr. Krabs thinks it is a little sad but says Squidward can hug himself during his break and leaves, failing the crying test. SpongeBob calls Mr. Krabs again and says that Squidward loves him, but Mr. Krabs tells Squidward to get back to work, failing the love test.
SpongeBob and Squidward then see Mr. Krabs with metal pincers (tongs he was holding a hard boiled egg with) and glowing red eyes (he accidentally threw salt into his eyes while trying to salt the egg after calling for him and startling him), which "confirms" SpongeBob's suspicions. Squidward announces over the microphone that robots are taking over the world, causing the customers to flee the Krusty Krab. SpongeBob tries to call the Navy, but, due to their automated phone service, thinks the robots have already taken it over. Mr. Krabs is relieved that his eyes aren't hurting anymore and walks back to his office without realizing that there aren't any customers in the Krusty Krab. Squidward then asks what the people did in the movie. SpongeBob says that they got poop or collected information from the robot after learning how to torture, and the two collect some tools for the investigation.
After collecting enough tools, SpongeBob and Squidward go into Mr. Krabs' office, send Mr. Krabs into a panic, and then tie Mr. Krabs up, accusing him of being a robot and interrogating him on the location of the "real" Mr. Krabs. When he gives them no answers and becomes annoyed and angered, they still think he is a robot and begin interrogating his machines, which include a blender, a toaster, a food processor, and a coffee maker.
After they destroy them, this greatly upsets Mr. Krabs, as the machines cost him money. When they come to the cash register, Mr. Krabs cries for it, which robots are incapable of doing, revealing that he is not a robot. He also mentions laughing with it and loving it. Squidward then asks SpongeBob how the robot movie he saw had ended--SpongeBob, who thought the ending of the movie was really good, remembers that the ending revealed that there weren't any robots after all and that they were all just in the characters' imagination.
Realizing his mistake, SpongeBob quickly runs off, declaring it's time to feed Gary, leaving Squidward to take the heat from a very angry Mr. Krabs growling and then yelling "Squidward!" while it shows the front of the Krusty Krab shaking, due to Mr. Krabs shouting at the top of his lungs.
In that episode, Mr. Krabs was accused of being a robot by everyone in Bikini Bottom whereas, in this episode, he was accused of being a robot by SpongeBob and Squidward.
When Squidward takes a hammer and a saw out of a shed, one can see a Krusty Krab calendar and it says that it was in September.
The song's name "Electric Zoo" is a possible reference to the Black Sabbath's "Electric Funeral."
If one looks closely when the Krusty Krab is zoomed out shaking while SpongeBob and Squidward are terrorizing Mr. Krabs, you can see the customers on the front inside, and the picture is similar to the scene where all the customers are running out of the Krusty Krab.
Interestingly, in "Imitation Krabs," SpongeBob thinks a robot is Mr. Krabs.
In this episode, it is the other way around: SpongeBob thinks Mr. Krabs is a robot.
His suspicions lead to him and Squidward accusing Mr. Krabs of being a robot.
In other countries, Squidward's joke is changed:
In the Korean translation, Squidward's joke was "Why did the idiot die?," and the answer was "Because he forgot how to breathe."
In the German translation, Squidward's joke was, "Why Chinese don't like pirate movies?" And the answer was, "Because they can't say Arr!"
In the Brazilian translation, Squidward's joke was "Why the pirate only watched half of the movie?" and the answer was "Because he was wearing an eye patch."
In the Polish translation, Squidward's joke was "What's the name of Santa Claus' wife?" and the answer was "Renifer Lopez." ("renifer" means "reindeer")
In Indonesia, the answer of the joke is "Because they haven't got report cards yet."
In Latin America, the answer to the joke is "Because it was forbidden for cabin boys."
When Squidward and SpongeBob barge into Mr. Krabs' office, they beat up Mr. Krabs. When they are beating him up, it shows a picture of the Krusty Krab. If one looks closely at that picture of the Krusty Krab, there is a fish at the door.
When shown on October 24 (unknown year) at 7:00 pm, on YTV, the episode starts at the Krusty Krab.
The man the robot was chasing in the movie was Dan Povenmire, known most widely for being one of two creators of Disney animated TV series Phineas and Ferb, along with Jeff "Swampy" Marsh.
Before that, he was a storyboard director, writer, and assistant storyboard artist for a few episodes of SpongeBob SquarePants.
KRUM, the radio station Mr. Krabs listens to, is the name of a real radio station.
The tests that SpongeBob and Squidward use to determine if Mr. Krabs is a robot could be a reference to the Voight-Kampf test used in the 1968 science fiction novel Do Androids Dream of Electric Sheep? by Philip K. Dick and the 1982 film adaptation, Blade Runner.
When Mr. Krabs has salt in his eyes, one is bigger than the other is but in the close up it is the same size.
When SpongeBob yells "I SURRENDER!" the Krabby Patties are gone. But when SpongeBob's hat flies through Squidward's nose, the Krabby Patties are back.
A "Help Wanted" sign is in the right window the first time the Krusty Krab appears in this episode and when Mr. Krabs is screaming at the end of the episode, despite the fact that there are already employees working at the place.
When SpongeBob calls for Mr. Krabs the fourth time and Mr. Krabs spills the salt in his eyes, the supposedly "hard-boiled" egg breaks and splatters like a raw egg.
When Squidward slaps Mr. Krabs and says "We can do this all night if you want." a part of the chair is missing behind Mr. Krabs.
The salt, when it flies into Mr. Krabs' eyes, was near the top of his eyes.
As he bursts through the door, the salt has collected into small piles at the bottom of his eyes, and eyelids.
Time Warner Cable incorrectly lists this as "Krab-Borg!"
Mr. Krabs only put one battery in his pocket, but when he comes out the door, there are two in his pocket.
When Mr. Krabs "pleads" with his radio to play "Electric Zoo" again, there is no sound (ie. another song or the DJ's voice) coming from the radio, despite the fact that the volume on the radio would need to be on in order for Mr. Krabs to hear the song.
It is unknown why the DJ and/or Mr. Krabs did not just say the name of the song instead of beeping because the DJ said that the song was "Electric Zoo" right before the song was played.
In the beginning, there was no cash register, but when Mr. Krabs goes to the bathroom, the cash register is back.
When Mr. Krabs is leaving his office because of his burning eyes, Squidward and SpongeBob notice that Mr. Krabs has batteries in his back pocket, but Mr. Krabs is far away from them.
Even though SpongeBob was equally guilty of capturing and detaining Mr. Krabs, the latter only yells at Squidward, though it was likely that because SpongeBob ran off, Mr. Krabs was unable to yell at him or Mr. Krabs was angrier with Squidward because he was the one who smashed all the expensive items belonging to Mr. Krabs.
Even though Mr. Krabs is a saltwater animal, his eyes are still burned by salt.
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