Encyclopedia SpongeBobia
Encyclopedia SpongeBobia

"Best Frenemies" is a SpongeBob SquarePants episode from season 4. In this episode, a new restaurant called Kelpshake opens in all over Bikini Bottom, where an unlikely duo team up to investigate.



The episode starts as a normal day at the Krusty Krab. Mr. Krabs happily is doing paperwork, but he becomes confused as to why his profits are down. He leaves his office and notices Squidward giving a customer his food, minus a drink. After Squidward says that no one has ordered a drink in days, Mr. Krabs questions this. Mr. Krabs then sees that everyone is drinking from bizarre-looking bottles filled with a green liquid akin to the color of seaweed, including SpongeBob. SpongeBob tells Mr. Krabs about the drink called the "Kelp Shake," which angers Mr. Krabs so much that he bans all outside drinks from the restaurant. This, however, backfires when the customers leave without paying for their food or drinks. Mr. Krabs goes to investigate, and it turns out that Squidward is following the trend too.

Enemies begrudgingly working together.

While Mr. Krabs is uncertain if Plankton is behind these new drinks, he goes to the Chum Bucket to investigate anyway. After accusing him of creating the phenomenon, Plankton tells Mr. Krabs he has no idea what is going on, because he has been relaxing the entire day. Worried the new Kelp Shakes may run the two's respective establishments out of business, they decide to work together and try to steal a Kelp Shake to discover what it is made of. They go to a Kelpshake restaurant and use multiple attempts, mostly involving Plankton's minuscule size to find out, but they all fail. The next day, Plankton angrily tells Mr. Krabs that he is giving up their escapade since he is the only one on the front lines. He and Mr. Krabs, who is also enraged, lament and argue over their failures, with Plankton calling Mr. Krabs a fat gorilla before SpongeBob suggests the two simply buy one, something that worries Mr. Krabs. With Plankton's motivation, Mr. Krabs reluctantly buys a Kelp Shake and goes to the Chum Bucket to analyze what it is made of.

Things are back to normal... well, almost.

Karen starts analyzing, but Plankton gets impatient and interrupts the progress of the analyzer. They find out that the drink has two ingredients, the primary one being kelp juice. The two drink the shake and find it to be delicious, but ignore Karen, who tries warning them about the other ingredient in the drink. After going out to buy some more shakes, SpongeBob is seen running towards Mr. Krabs and Plankton, wailing and crying, as he is covered in green kelp fuzz all over his body, even growing over his clothes or outright disintegrating them. He also tells them that they are shutting down the Kelpshake restaurants and runs away.

Then they go out and see that all Kelpshake restaurants are shut down because their shakes contained a toxic and dangerous ingredient. Then Mr. Krabs and Plankton grow the kelp fuzz all over their body. Among the fuss, Plankton decides to go back to stealing the Krabby Patty secret formula. Instead of attempting to stop him, Mr. Krabs gives him a Krabby Patty and they chase each other around just for the fun of it as best frenemies while the episode ends.

Running gags

  • Plankton is getting hurt that every time he and Mr. Krabs try to infiltrate the Kelpshake restaurant to find the secret ingredient.



 ) Production music
 ) Original music
 ) SpongeBob music

  The Girl I Left Behind Me - Brian Peters [title card]
  Steel Licks 3 - Jeremy Wakefield ["Profits... are... down."]
  The Tip Top Polka/The Cliff Polka - Chelmsford Folk Band ["Would you like a drink with that order?"]
  Parting of the Clouds - Nicolas Carr [shot of kelpshake]
  What's This - Nicolas Carr ["Kelpshake?"]
  Dingles Regatta - Brian Peters [everyone drinking kelpshakes]
  Steel Licks 8 - Jeremy Wakefield [Everyone leaves]
  Steel Licks 9 - Jeremy Wakefield ["I'd better get to the bottom of this."]
  Dramatic Impact (2) - Ivor Slaney [kelpshake store]
  Lonely Heart's Club (a) - David Bell, Otto Sieben [Pearl drinking a kelpshake]
  Goofy Conversation - Nicolas Carr, Barry Anthony ["Aha! I knew you were behind this!"]
  Lonely Heart's Club (a) - David Bell, Otto Sieben ["Wait a minute!"]
  King Kong Coming - Gregor F. Narholz [kelpshake stores multiplying]
  Panther Prowl - David Farnon ["You sure this is gonna work?"]
  City Heat - Gerhard Trede [Krabs pretending to sneeze/Krabs and Plankton leave the kelpshake store]
  Bongo Crauy - Nicolas Carr [Bongos overlay "Panther Prowl" and "City Heat"]
  Hercule Poirot - Gerhard Trede [mechanical arm]
  Vibe Q Sting - Nicolas Carr ["What about SpongeBob?"]
  Towerstreet 17 [#33] - Gerhard Narholz ["Mr. Krabs, I'm a little confused."]
  Lap Steel - Nicolas Carr [SpongeBob leaves]
  City Heat - Gerhard Trede [Krabs and Plankton on the roof]
  Towerstreet 17 [#6] - Gerhard Narholz [Krabs and Plankton trying to get a kelpshake]
  Keel Row - Brian Peters ["All these convoluted plans are getting us nowhere."]
  Hello Blues - Sage Guyton, Jeremy Wakefield [Krabs buys a kelpshake]
  Like Strange - Kenny Graham ["I can't believe we did it!"]
  Lonely Stranger - Laurie Johnson [Plankton's lab]
  Harp Ding - Nicolas Carr ["Kelp juice."]
  Wooden Bear - Gil Flat, Tony Tape, Florian Voelxen [Karen warns them not to drink the kelpshake]
  Steel Sting - Jeremy Wakefield ["Aw, phooey."]
  House of Horror - W. Merrick Farran ["What's happening to me?!"]
  Footsteps of Horror - W. Merrick Farran [SpongeBob covered in algae]
  Vibe Q Sting - Nicolas Carr ["Huh?"]
  Dramatic Cue (D) - Ronald Hanmer [Krabs screams]
  12th Street Rag - Sage Guyton, Jeremy Wakefield [ending]




  • This episode was released on the Season 4 Volume 2 DVD box set before it aired on American television.
  • The title is a portmanteau of "Best Friends" and "Enemies," making it "Frenemies."
  • The title card background is similar to those of "The Paper" and "I'm Your Biggest Fanatic," though this one is orange.

Kelp Shakes on the Galley Grub menu in "Mermaid Man and Barnacle Boy V."

Cultural references

Plankton's abnormal hair growth.

Albert Einstein's hairstyle as shown with a picture of his head in "Ugh."

  • Plankton's abnormal hair growth makes him have a head-hairstyle similar to Albert Einstein. Since Plankton has an interest in science, this hairstyle that he has developed is rather suitable.
    • Albert Einstein was also referenced in a previous episode called "Ugh." Specifically when a picture of Albert Einstein's head appears inside of a speech bubble from Squog's mouth.


Incidental 36 with yellow eyes.

  • While everyone is drinking Kelp Shakes at the Krusty Krab, Incidental 36's eyes are yellow instead of white.
  • When Incidental 37B says, "Wow, what a steal" and orders food, he just walks away without taking any of the food he ordered.

The Kelp Shake straw is overlapping SpongeBob's mouth.

  • When Mr. Krabs says, "What? Why not?" and SpongeBob is shown drinking the Kelp Shake for the first time, the straw is overlapping his mouth.
  • There are some errors during the part when Mr. Krabs and Plankton walk into a Kelp Shake store and look for the kitchen door.
    • When Mr. Krabs whistles and first notices the kitchen door, it has a purple sign that reads "Employees Only!" in pink letters and has the correct spelling.
    • When Mr. Krabs is sneezing in several different directions and sends Plankton flying towards the kitchen door, the same purple sign with pink letters from before now reads "Employes Only!" with the word "employees" being misspelled by missing the third "e."
    • When Plankton lands on the window of the kitchen door and gets stuck, the "Employees Only!" sign is now yellow with red letters and the word "employees" is spelled correctly again.
  • The security system which warns Mr. Krabs and Plankton says, "You have three seconds until spontaneous combustion!" and then pulls out a laser, but the term "spontaneous combustion" actually means something that suddenly bursts into flames.
  • When the security system says, "You have three seconds until spontaneous combustion!" as a warning to Mr. Krabs and Plankton, more than four seconds pass overtime before Plankton is electrocuted by a laser.
  • There are three Kelp Shakes next to the Krusty Krab, two on the left and one on the right, but when SpongeBob talks to Mr. Krabs and Plankton inside the restaurant, two of the Kelp Shakes on the left outside are gone.
  • After Mr. Krabs says, "Hey, get back here you little booger!," Plankton suddenly disappears out of the screen, rather than gradually disappear, like in other episodes.
  • Normally, Plankton's mouth is red, but in this episode, it is purple.


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