Squish, Squash, Smash...The Mighty Octostomp!
— Splatoon's Subtle

I'M BAAAAAACK! Octostomp
— Splatoon 2's 1st Phase

And I brought this sweet new coat! Neo Octostomp
— Splatoon 2's 2nd Phase

The Mighty Octostomp is one of the Great Octoweapons and the first boss of Splatoon's Hero Mode and the third boss of Splatoon 2's Hero Mode. He is one of two known bosses to appear both multiple times and in multiple games, the other being DJ Octavio. 



The Mighty Octostomp is a large cube, with four different layers to its face being the main base, another square which comes out slightly more, the main face area which sticks out more than the second layer, and the eyes and mouth which both stick out of the face. When on the ground face-first, the Octostomp’s face will flatten, but during combat it will have all four layers stick out; each more than the last. 

It is mostly metal with a grey body. The Octostomp’s face is covered in Purple ink, with its lips being a slightly darker purple and its eyes being green. 

The Octostomp has two amusingly small legs with black socks, which are somehow able to make the massive body jump, although they aren't very useful for getting back onto its feet. Underneath it also has some hanging wires.

On the back of the Octostomp is a small circle filled with ink, where a tentacle can enrage. It can use this to steal Zapfish, but unfortunately also works as it's weak point which the inklings use to destroy it.

The Octostomp's sides and top are comprised of 9 different panels each, which the inkling can use to get onto its back once the Octostomp is stuck on its face. However, as the battle continues the amount of panels will decrease, leaving empty gaps with electric currents coming out of them.


Phase 1

You will be thrown straight into the action as the camera goes back behind your Inkling, and the large pink-faced cube ahead of you charges in your direction, leaving a trail of purple ink wherever it treads. Your first reaction it most likely to shoot it, but this won't actually do anything. The Octostomp will then try to quickly jump on you, so making use of your own ink to swim and avoid it is the best option here. As it lands on its face in a poor attempt to crush you, the Octostomp will spray its own ink around it, so be careful not to get stuck there and waste time. 

Octostomp Tentacle

The Octostomp's tentacle being destroyed

While it's stuck on its face, wiggling its little legs around, splat your ink up its side and use your squid form to get on top of it. Here you will find a large tentacle sticking out of its back; the same one that took the Zapfish, although it's nowhere to be seen. Shoot the tentacle with your ink and it will expand multiple times until it eventually explodes, spraying pink ink out of the Octostomp’s back like a fountain and forcing you to retreat automatically via Super Jump to a safe part of the arena. The Octostomp will then re-grow the tentacle in its back and jump into its feet before turning around, expanding its face, and pulling its face back in, causing some of the metal plates on its side fall off. Again, the Octostomp will let out a cry, this time removing all the ink on the ground and the fight continues.

Phase 2

Like before, shooting the Octostomp in the face will be ineffective, so wait for it to jump, avoid it, and aim to climb onto its back once it gets stuck. This time, however, there will be open gaps in its side since the metal plates fell off before. Now you will have to take a specific route upward, avoiding the electric currents coming from the gaps. The Octostomp will also get up more quickly now, leaving you less time to get to the top before it rolls back onto its feet. When you manage to climb up, shoot the tentacle until it explodes like before. Again, you will automatically Super Jump back to a safe area.

Phase 3

Mighty Octostomp

Agent 3 facing off against the Octostomp.

The third phase is just like the second, but the Octostomp will lose even more panels from its side, meaning you'll have to get across three diagonal squares to reach the top; the two on the sides moving up and down and the middle one staying in place. The Octostomp lets out a cry, the ink is removed, and the battle continues. 

Once it's jumped onto its face again, the best way to traverse the side now is to cover all three panels in ink, go into squid form on the first panel and wait for it to be in-line with the middle panel before moving
Octostomp Side

The third way to climb the Octostomp

onto it. Then wait until the third panel is in-line with the middle one, move onto that, swim onto its back to destroy the tentacle for the third time. 

Agent 3 will now Super Jump away again and the camera will go back to the Octostomp, showing it stuck on its face with its legs now spinning in a circle as it malfunctions. A light will emit from the creature as its legs speed up more before coming to a complete halt. The Mighty Octostomp will then explode, throwing ink everywhere and covering your screen. After the ink clears, you will be rewarded with 10 Power Eggs circling the Zapfish you were after right in front of you. Now the arena is completely covered in your ink , so you can easily swim around. Collect the Power Eggs and the Sunken Scroll, destroy the light bulb the Zapfish is stuck in and retrieve it. Mission complete.

Splatoon's Boss demonstration

Octostomp Boss Fight

Octostomp Boss Fight

Splatoon 2

Neo Appearance

During the 2nd phase, the Octostomp will wear a coat made of ink-proof material, much like the inside of a Hot/Cold shopping bag. The coat has a design of a penguin on the back, and holding it onto the boss is a large plastic buckle, which the player will need to shoot first before he/she can climb up.

The Octostomp also is hiding an Octotrooper inside the top of the coat, complete with a Heavy Splatling-like gun.

During the 3rd phase of the fight, the Octostomp gains another coat similar to the first one, but this one has two zippers at the sides, allowing its 2 extra faces to be revealed. At the back of the boss is the hole where the tentacle is resting, which the player will need to shoot in order to defeat the boss.


First Phase
Octostomp Intro

The boss will run up to you and try to face plant itself on you. You can climb up it once its on the ground, but it won't stay like that forever. The boss can also to a sliding charge attack. After the charge, the Octostomp will do its face plant.

Second Phase
Neo Octostomp

The boss is now covered in armor that makes it un-inkable. To get rid of the armor, you must attack the black buckle holding the armor together. Its located on the Octostomp's face. If the boss still has its armor, it can do a attack where it fires a gun at you. He will use all his attack methods from phase 1.

Third Phase
Neo Octostomp Phase 3

The boss regenerates its armor, and now it has two extra faces. These faces will make the machines sliding charge and face plant much wider. Destroying the armor will also get rid of the faces. He uses all attack methods from the previous phases.

Splatoon 2's Boss demonstration

Octostomp Neo Octostomp's Gameplay

Octostomp Neo Octostomp's Gameplay


  • The Octostomp is the only boss to have two introductions, its second being in phase 2 where it is renamed the Neo Octostomp.
  • On the Wii U gamepad, it is shown as a square, whereas the other three Great Octoweapons are circles.
  • The design of the Octostomp’s face is the same as the bottom of the Octoseeker. Unsurprisingly, on the ground, both stamps look the same.



Splatoon 2

Names in Other Languages

Language Name Notes
Japanese タコツボックス
Octopus pot + Box