Anchor Arms are a pair of inflatable, rubber fake biceps that SpongeBob wears in the episode "MuscleBob BuffPants."


Anchor Arms appear to be long, large pink balloons that are worn on the arms like gloves and inflated to form "muscles."

The settings are as follows:

  • Normal
  • Strong
  • Veiny
  • Hairy (for the "ladies")

The levels of air pressure are as follows:

  • Normal (Green)
  • Strong (Yellow)
  • Super (Orange)
  • Jerk (Red — Never inflate to this level as it will cause over-inflation and damage the Anchor Arms. However, SpongeBob eventually blows them exceeding Jerk as he struggles when lifting his anchor, causing them to overstretch, explode, and deflate.)

Role in series

"MuscleBob BuffPants"

SpongeBob notices that he is very weak compared to Sandy and she offers to give him exercise training. After failing at it, SpongeBob goes home with painful arms. He lies in his arm, when a commercial on TV starts. Donald the Shark tells the audience why to buy the product. SpongeBob is then convinced and buys some. He goes to Goo Lagoon to show off his fake muscles. He convinces everyone, including Sandy. Thinking that he is really strong, she signs them up for an Anchor Toss competition. When it is SpongeBob's turn to go, the Anchor Arms' rubber starts to stress due to SpongeBob over-inflating them into the Jerk size while struggling to lift the anchor (even the Arms can be seen over-stretching with their "veins" bulging out and causes the air to randomly blow into parts of SpongeBob's body). Eventually, they explode and deflate, revealing that his muscles are just fake, to Sandy's disappointment.

Battle for Bikini Bottom

A variant of the Anchor Arms is used to repair SpongeBot SteelPants, after the real SpongeBob temporarily destroys him. The difference is that these particular Anchor Arms appear to be made of plastic, instead of rubber balloons as in the original.

SpongeBob's Atlantis SquarePantis SquareOff

They are used by SpongeBob to battle enemies.

SpongeBob Moves In!

They are used for a costume for SpongeBob.


  • It is a reference to part of an anchor called the "arm," which is the part that curves out from the bottom end of the main part and ends in the pointed part.
  • In the scene where the Anchor Arms blow up, they are then deflating in a similar manner as a rubber balloon — floating randomly as they lose air and making a characteristic noise.
    • This is probably an oversight (or possibly for comical effect) since the Arms actually exploded, thus they would be completely blown up instead of deflating. In addition, the destroyed remains of the fake arms indicate that the "hands" are the only part that exploded, which explain why they are deflating.
  • It is shown that SpongeBob appears to hide his real arms inside his body while using the Anchor Arms, as seen after the Arms get destroyed, he pops his arms out as Sandy looks at him.
  • The fact that the Anchor Arms are fragile and easily get damaged when misused, implies that they are just a novelty toy that is not designed for extreme use.
Atlantis SquarePantis (VE)

Characters: The QuicksterLord Royal HighnessAtlantean citizensCaptain of the Sea Ship AtlantisKnowledge MachineAtlantean RobotsRobot touristsRed AtlanteanYellow AtlanteanAtlantean royal guardNandoSpongeBob hallucinationAggressive Case of the SnifflesOrange GuardBubble SpongeBobDave (cave)Norbluck 5Pedal-throwing robotMagenta thugPale anakiwa thugLight brown thugBlue thugGreen jellyfishGhost jellyfishBlack jellyfishMagma jellyfishDiamond JellyfishSteel JellyfishBrown tall fishPurple tug fishPontifexGigantic JellyfishRoyal Guard Commander

Locations:AtlantisMuseum of AtlantisMuDriving You Nuts!SpongeBob's pineapple gardenMuSquirrel Museum of NutsSquirrel CityWhelk-MartJellyfish FieldsEncinoGasMusic StationNickelodeon Animation Studio

Objects:Plankton's tankAtlantean amuletSea Ship AtlantisOldest living bubbleBlue jewelRed jewelGolden spatulaSheet musicMelody ShellsToolkitSpeed BoostersHooksAtlantis bubblesBubble Collector 2000Frampton Comes AliveCanned BreadAnchor Arms

Songs: The Bubble SongFueling the BusMr. Krabs' songSandy's songSquidward's songPlankton's SongGood-Bye, AtlantisBack in Encino

Shorts: Are We There Yet?Beware Flying JellyfishDocumenting Our Road Trip

Miscellaneous: DVDBookVideo gameMobile gameOnline gameAtlantis unofficial songSpongeBob's Director's CommentaryMy Trip to Atlantis - by SpongeBob SquarePantsSpongeBob's Atlantis SquarePantis SquareOffInside the SpongeBob Animation StudiosBehind the Pantis