Asynchronous Rondo

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Asynchronous Rondo
Species Jelleton
Habitat Boss floors
Hair color
Eye color Red
Location 10F and 20F (Layered-Rotator.Floor)
Maximum HP
Other forms
The Layered Rotator
Asynchronous Rondo
— Asynchronous Rondo's boss introduction

Asynchronous Rondo is a Jelleton boss in Splatoon 3: Side Order.


Asynchronous Rondo is a large rotating tower. The boss design is based off of a sushi conveyor belt and a merry-go-round, and the stage is inspired by a panopticon prison and a circus arena[1]. It has weak points on each layer resembling Jelletons as huge blobs of black jelly and bulging red eyes.

The Rondo was originally created by Marina to serve as a hospitality bot, but it had been corrupted by Order, becoming aggressive as a result[1].


Asynchronous Rondo consists of nine layers of gradually bigger, spinning wheels. Each layer has an exposed face vulnerable to attacks; adjacent to the faces are searchlights that activate on the bottom layer which can be avoided by hiding behind cover or hiding in ink. However, it can still spot the player when fast swimming. When a layer is destroyed, the said layer collapses and lowers the layers above it. Attacking the face of the layer will deal normal damage. The wheels can also be attacked, but this does much less damage.

It attacks by summoning hordes of Jelletons while trying to find the player with its searchlights. If the player stands under the bottom layer, it uses an attack similar to the Wave Breaker's shockwave. Should the player be seen by a searchlight, it may use Toxic Mist, a Torpedo, or an Inkstrike; an icon below the searchlight reveals which attack will be triggered. When spotted, the light will turn red, indicating that the player has been found.

When a certain amount of time passes, it spins rapidly and uses one out of three attacks (destroying a layer with lights might reduce the time before an attack, it is unsure still):

  • Spinning while shooting Sting Ray-esque beams that slowly track the player's vertical position.
  • Shooting Splat Bombs in a circle pattern close to the player.
  • Releasing multiple Homing Arpeggios.

After its big attack, it overheats and becomes stunned for a short time.

The arena has cover on the outskirts which can be used to avoid the searchlights. Going under the boss is also an option to avoid being detected by searchlights, its Sting Ray attack, and its Splat Bomb attack, although it will then retaliate with shock waves, getting progressively more frequent the longer the player stays.[2] It will not send out shockwaves if recovering after a heavy attack.

Only the layers with glowing lights along the edges need to be destroyed to defeat Asynchronous Rondo; inkrails and bounce pads in the arena can be used to provide enough height to hit its higher layers should the player's weapon have a long enough range. The order in destroying all glowing layers does not matter.


The following text is quoted from the Jelleton Field Guide.

Habitat: Boss floors
The face-like nodes on the rim
are its weak spots. Bad things
happen if the searchlight catches
you, so hide in its blind spots or
duck into your ink until it passes.
You'll need to destroy the lit-up
layers to win. You can work your
way up from the bottom, or try
for the higher layers first if you
have a long-range weapon!
Wait, is that a symbol under the
searchlight? I think it's showing
what kind of attack it'll do or
Don't get caught in the searchlight!



  • Asynchronous Rondo's weaknesses are reminiscent of the Octonozzle: both of their weak spots are on circular stacked platforms, which lower when the weak spot is destroyed.
  • When Asynchronous Rondo's voice clips are stitched together, they make up a distorted version of the chorus of Ebb & Flow.[3]
  • While the defining feature of the Asynchronous Rondo is its use of searchlights for attacks, and its arena displays searchlights scanning the environment, panoptic prisons are actually designed specifically not to use searchlights, which would betray whether or not inmates are being watched.


In computing, "asynchronous" functions are functions that can run independently from one another at the same time, as opposed to running one function at a time. Every layer is always spinning, no matter its position, and each layer spins in a different direction from its adjacent layers.

A "rondo", in musical composition, is a style where the main theme repeats several times. This boss spins constantly throughout the fight.

Names in other languages

Translation needed
The section or page is missing non-English translations or material from other localizations edit
Language Name Meaning
Japan Japanese カイセンロンド
Seafood/Spin Rondo[a]
Netherlands Dutch Asynchrone Rondo Asynchronous Rondo
France French (NOE) Rondo asynchrone Asynchronous Rondo
Germany German Asynchrones Rondo Asynchronous Rondo
Italy Italian Rondò asincrono Asynchronous rondo
Russia Russian Кольцевое асинхрондо
Kol'tsevoe asinkhrondo
Annular asynchrondo
SpainMexico Spanish Rondo circundante Surrounding rondo
China Chinese (Simplified) 回转轮舞
Huízhuǎn lún wǔ
Revolving Rondo
 Internal TowerKing

The Layered Rotator
Language Name Meaning
Japan Japanese 積層し円転する
Sekiso shi enten suru
The Laminated and Rotating
Netherlands Dutch De gelaagde rotator The layered rotator
CanadaFrance French Le Girateur Stratifié The Layered Rotator
Germany German Rotierende Stufenstruktur Rotating step structure
Italy Italian La trottola stratificata The layered spinning top
Russia Russian Ступенчатая юла
Stupenchataya yula
Stair-step spinning top[b]

Translation notes

  1. カイセン can be interpreted as either 海鮮 (kaisen, seafood) or 廻旋 (spin).
  2. Юла yula is a kind of a spinning top toy popular among Soviet and Russian children consisting of a colorful spinning base and a spinning mechanism with a moveable handle on top.