- French Narrator
- Incidental 28
- Incidental 11
- Mermaid Man
- Barnacle Boy
- Squidward Tentacles
- SpongeBob SquarePants
- Incidental 6
- Mr. Muscul
- Cockroaches (debut)
- Patrick Star
- Sandy Cheeks
- Larry the Lobster
- Incidental 41
- Incidental 7
- Mrs. Puff
- Incidental 92
- Incidental 4
- Incidental 73
- Incidental 49
- Margaret SquarePants
- Incidental 48
- Incidental 37A
- Incidental 23
- Incidental 31
- Incidental 108
- Incidental 84
- Incidental 40
- Incidental 67
- Incidental 22
- Incidental 25
- Incidental 82
- Incidental 63
- Incidental 37B
- Incidental 60
- Incidental 46
- Incidental 106
- Incidental 116
- Incidental 90
- Incidental 47
- Incidental 8
- Incidental 93
- Incidental 69
- Incidental 65
- Incidental 32
- Incidental 18
- Incidental 12
- Incidental 24
- Incidental 107
- Incidental 9
- Incidental 13
- Incidental 2
- Incidental 10
- Incidental 14
- Incidental 68
- Incidental 36
- Incidental 21
- Old Man Jenkins (blue; wheelchair)
- Incidental 17
- Incidental 94 (tan)
- Incidental 152
- Incidental 39
- Incidental 104
- Incidental 154
- Incidental 118
- Incidental 103
- Incidental 85
- Incidental 150
- Incidental 102
- Incidental 42
- Gary the Snail
- Incidental 27
- Sheldon J. Plankton (cameo)
- Old Man Walker
Mermaid Man and Barnacle Boy are entering the Krusty Krab for lunch, but Squidward and Barnacle Boy have an argument. Upon realizing this, SpongeBob goes into an excited frenzy and eagerly requests their autograph. The heroes run away from him, accidentally leaving Mermaid Man's belt inside. SpongeBob finds it and tries to give it back, but they drive away in the invisible boatmobile before he can do so.
SpongeBob decides to wear the belt and play with it, thinking that he could hold on to it until after work. He discovers the "Small Ray" and starts shrinking the items in the kitchen. At the register, Squidward is suddenly startled by the commotion in the kitchen which caused him to mess up one of the customers' order by accident, which results in a punch in the face. This prompts Squidward to enter the kitchen to see everything having been shrunken. Squidward at that moment discovers that SpongeBob has gained possession of Mermaid Man's belt. Assuming that SpongeBob has stolen the belt, Squidward plans to do the right thing and call Mermaid Man in order to inform him of the situation and thus get revenge. Worried that his friendship with the heroes will deteriorate, SpongeBob shrinks Squidward with the belt to foil his plan. Squidward demands SpongeBob to return him to normal size, but he has no idea how to. Due to the belt's complicated and excessive features, he instead puts Squidward through many increasingly ridiculous and excruciating feats. Squidward suggests getting Mermaid Man's help, but SpongeBob still refuses, stating someone else must be able to help him.SpongeBob goes to Patrick for help, to no avail. Patrick mistakes Squidward for an action figure and starts playing with him, even after realizing that it is the real Squidward. Patrick then suggests turning the "M" upside down, setting the belt to W for "Wumbo," which results in Patrick coining the term. SpongeBob questions the validity of this, but after Patrick responds by stating the many uses of "Wumbo," SpongeBob is convinced by this idea and decides to test it out, but then he accidentally shrinks Patrick. Seconds later, citizens start coming to and greeting SpongeBob, prompting him to shrink them so that they cannot tell Mermaid Man that he has gained possession of his belt.
Eventually, SpongeBob has shrunken everyone in Bikini Bottom and crams them all into the jar. When his mother tells him he need to admit his mistakes, he then realizes he shrunk Mermaid Man and Barnacle Boy as well, and he tearfully apologizes to them. Mermaid Man accepts his apology and goes into a story about the first time he used the belt, until everyone interrupts him and demand that he tell SpongeBob how to return them to normal size. After thinking for a moment, Mermaid Man asks SpongeBob if he set the belt to Wumbo, which makes everyone realize that Mermaid Man does not know how to unshrink them either.
The citizens then form a mob and venture into SpongeBob's body, then begin assaulting his internal organs and bones in a violent manner. This goes on a for a while until everyone realizes that SpongeBob is too big to be destructible, which gives the latter the idea to shrink Bikini Bottom before shrinking himself.
The citizens are pleased with this as they see no discernable difference from their previous lives to living in a miniature Bikini Bottom. As the citizens celebrate, a bus pulls up and Plankton steps out, returning to Bikini Bottom from a vacation. He is surprised that the city is now smaller than him, providing him with many evil schemes, and the episode ends.
|( ‣ ) Associated production music|
|( • ) Original music|
|( ◦ ) SpongeBob music|
‣ The Lineman - Sam Spence [title card]
‣ Hawaiian Link (b) - Richard Myhill [opening]
‣ Caped Crusader - David Farnon [Mermaid Man and Barnacle Boy enter the Krusty Krab.]
‣ Tympup A - Sammy Burdson, John Charles Fiddy ["Will this cover it?"]
• Steel Licks 8 - Jeremy Wakefield [Barnacle Boy pays.]
• Steel Licks 9 - Jeremy Wakefield ["I'm shaking."]
‣ On Fire - Gregor F. Narholz ["Must get autograph!"]
‣ The Lineman - Sam Spence [Mermaid Man and Barnacle Boy run from autograph hound SpongeBob; Mermaid Man forgot his belt.]
‣ Friendly Aliens (b) - Ron Goodwin ["The emblem of submersible justice."]
‣ Comic Walk - Sidney Torch ["I could just hold onto it until after work."]
‣ The Tip Top Polka/The Cliff Polka - Chelmsford Folk Band ["Here's your shake, sir."]
‣ Tomfoolery - David Snell [SpongeBob shrunk everything.]
‣ Dramatic Climax - Mike Sunderland [Squidward demands to be returned to normal size.]
• 12th Street Rag 3 - Nicolas Carr, Sage Guyton, Jeremy Wakefield [SpongeBob zapping Squidward]
‣ Lovely Scenery (c) - Mladen Franko ["No! I can't let you do that!"]
‣ Springtime for Lovers - Len Stevens ["He'll find love one day."]
• Steel Licks 1 - Jeremy Wakefield [W for Wumbo]
‣ Dramatic Impact 3 - Ivor Slaney [Patrick has shrunk.]
‣ Tympup A - Sammy Burdson, John Charles Fiddy [Patrick has shrunk.]
‣ Dramatic Impact 2 - Ivor Slaney ["No! He can never find out!"]
• Steel Licks 9 - Jeremy Wakefield ["You know what's funny? My pickle started out in a jar, and now it's in one again!"/"It's like a pun or something. Heheh."]
‣ Where Danger Lurks - Ronald Hanmer [SpongeBob shrinking everyone]
‣ Lonely on the Beach - The Hawaiian Serenaders, Jan Rap ["SpongeBob, you need to admit your mistake."]
‣ The Lineman - Sam Spence [Everyone attacks SpongeBob.]
‣ Harp Ding - Nicolas Carr ["I've got it!"]
‣ Sunny Samoa - George de Fretes, Jan Rap [ending]
- This episode is available on the Christmas, Complete 3rd Season, First 100 Episodes, The Best 200 Episodes Ever, Holidays with SpongeBob 3-DVD Gift Set, From the Beginning, Pt.1, Mermaid Man & Barnacle Boy: Defenders of the Deep, SpongeBob SquarePants Vol. 4, The Third & Fourth Seasons, Nick For the Holidays!, Complete Third Season, and The Adventures of SpongeBob SquarePants DVDs.
- "Mermaid Man and Barnacle Boy IV" was ranked #90 during the Best Day Ever event on November 9–10, 2006.
- Although this episode aired on January 21, 2002, it was made in 2001 according to the credits.
- This is the first episode where Mermaid Man's belt is purple with a blue "M" instead of yellow with a yellow "M."
- There's a book based on this episode named The Adventures of Man Sponge and Boy Patrick in What Were You Shrinking?
- This is the second episode where SpongeBob is wearing a belt covering his shirt and tie throughout most of the episode. The first was "Hall Monitor."
- "My leg!:" Everyone is squished inside the jar.
- Despite SpongeBob shrinking everyone in Bikini Bottom, Mr. Krabs, Pearl, and Karen do not appear in this episode.
- This is the second episode Plankton appears bigger than the Bikini Bottomites. The first is "Sleepy Time," though it was only a dream.
- This episode has SpongeBob's CGI cell-shaded appearance when he breaks a steel wall at the Krusty Krab.
- After SpongeBob shrinks everyone in town, Patrick is not seen again for the rest of the episode.
- The invisible boatmobile is revealed to be a pink 1959 Cadillac in this episode.
- This marks the only episode to date where Margaret SquarePants is seen without her husband.
- This episode reveals that there is a phone in the kitchen of the Krusty Krab.
- This episode reveals that Mermaid Man has been fighting crime for over 65 years.
- When SpongeBob is reaching for the pen, he says "Keyah!," which is the Taekwondo word used when one is about to perform something.
- SpongeBob cannot get the citizens of Bikini Bottom back to normal, but in "Mermaid Man and Barnacle Boy," SpongeBob mentions a ray gun that made things grow six times their normal size.
- Patrick explaining the meaning of the word "Wumbo" has become a popular Internet meme.
- In the Monday Knight Slimetime marathon, this episode was paired with "I Had an Accident."
- When SpongeBob is running to Patrick, one can see that the former is not wearing the utility belt in the first shot.
- When Squidward enters the kitchen to confront SpongeBob for stealing Mermaid Man’s belt and for shrinking everything in the kitchen, the door that leads from the kitchen to Mr. Krabs' office is gone.
- Even though there are a lot of cars parked outside the Krusty Krab, there are no customers inside it except for Mermaid Man and Barnacle Boy.
- When Mermaid Man and Barnacle Boy drive off from the Krusty Krab, all the cars are gone.
- After Mermaid Man uses the invisible boat alarm and says "There she is," he is just holding his pants, but when he gets to the boat, he is wearing clips on his pants, which he was not seen putting on.
- The aforementioned clips holding up Mermaid Man's pants change colors between shots.
- When SpongeBob gives the Krabby Patty to the cockroach, the holes on his spatula disappear.
- Mermaid Man is overweight, but his pants do not fit him when he does not wear his belt.
- When SpongeBob shrinks Sandy, Squidward and Patrick's eyes are black.
- SpongeBob has difficulty closing the jar with everyone trying to fit in it, but when Mermaid Man mentions setting the belt to "Wumbo" and everyone yells "What?!," it appears that they do not quite fill up the jar to the top, and he has plenty more room. This also happens when he cries "You don't understand!"
- In the aforementioned shot where everyone yells, "What?!," when the screen shakes, the background is not big enough, which causes some bits of white to be shown.
- In some shots of when the townspeople are beating up SpongeBob's inside, SpongeBob has bones. However, SpongeBob is an invertebrate.
- When everyone pops out of SpongeBob, Sandy's head is missing.
- When SpongeBob shrinks himself, Mermaid Man's belt is changed into his normal pants.
- When SpongeBob bursts through the wall overhearing Squidward saying Mermaid Man and Barnacle Boy, it is blue in the first shot. After SpongeBob grabs the pen, the wall is back to its original colors in the second shot.
|This page uses content from Wikipedia (original • authors). Both Encyclopedia SpongeBobia and Wikipedia are licensed under the CC BY-SA 3.0 Unported license.|