Enter the Octobot King!

Enter the Octobot King! is the fifth and final boss mission in singleplayer Hero Mode. DJ Octavio, leader of the Octarians, is the final boss.

Octo Valley
After completing every previous level in Octo Valley, the Boss Kettle on the UFO floating above the valley will finally be unlocked. After this, the player must make their way to the top of the 5th area, where there will be a super jump pad waiting for them. This pad will launch the player to the UFO, which will, upon entering the Boss Kettle, fly away and carry them to the final boss.

Boss Appearance
Unlike most Octarian fighters, which appear to be severed tentacles, DJ Octavio is an actual octopus in his entirety. He resembles a giant red-purple octopus with a permanent angry expression on his face. His tentacles bare large green X-shaped scars, similar to the ones seen on other bosses. On his head sits a large gold helmet, fashioned similar to a samurai helmet, with an octopus-shaped emblem on the front. He sits inside of a flying machine equipped with a pool of purple ink and a turntable, which he plays using plentiful stalks of wasabi. The turntable has four cannons on the front, two extendable fists and a set of thrusters that allow it to stay airborne.

Attacks
The boss stage and boss itself uses everything the player has learned throughout Hero Mode. During the boss fight with DJ Octavio, he will use several techniques to try and splat or crush the player:


 * Octorpedoes, which are launched from the cannons in the front. They vaguely home in on the player, but are primarily used to cover the ground in ink.


 * Two giant fists that can be extended to try and punch the player. If shot at before they hit the ground, they will fly back into the machine and damage it, pushing it backwards through the long corridor.


 * Small, discoball-like spheres spawn an Octarian when it lands. The Octarian spawned depends on the phase. It can be shot at to make them explode into ink.


 * The Octarian version of the Inkling's Killer Wail. Unlike the Inkling's version, this version cannot hurt the player if they are hiding inside their own ink.


 * A massive octopus-shaped bomb that explodes into a massive amount of the ink. If shot back at DJ Octavio, he will continuously punch it back until he runs out of fists with which to hit it back and gets hit. These are the key to his defeat.

First Phase
First, DJ Octavio will send out two Octorpedoes at a time. Eventually one of the fists from the machine will be fired at you. Shoot it until it gets sent into DJ Octavio's face. Repeat this three times until he sends out an Octopus-shaped bomb. Fire at this to hit it back three times and then a launch pad to the next phase will appear.

Second Phase
This time, in order to push DJ Octavio back, you need to shoot both fists. In order to get close enough to DJ Octavio to fight him, you have to shoot Propeller Lifts. This is the phase when DJ Octavio starts throwing the bombs that spawn enemies. Two bombs will be shot along with the Octorpedoes. They spawn an Octocopter and an Octobomber. The missle will start moving faster and changing it's path towards you to the side. While it is possible to get very close to the machine, it's unadvised to do so since all attacks will be harder to count close up (this applies to all phases). Once you send the bomb into his face three times, another launch pad will appear.

Third Phase
DJ Octavio will shoot four Octomissles at a time now. Both bombs contain Octoballs. The terrain changes to include more ramps. Traversing to the next are of requires ink invisible pathways, and occasionally, gushers. Continue to repeat the main strategy in the previous phases.

Fourth Phase
The next phase has very little ground to traverse. Only one enemy-spawning bomb is fired at a time, containing a Twintacle Octotrooper. Once you reach the missle, the terrain only consists of a walkway with some small ledges to the side. The bomb will begin to move incredibly fast, requiring quick reflexes. once you send the bomb into DJ Octavio's face for the final time, he will be ejected from the machine and you have to shoot him back in to deal the final blow.

Sunken Scroll Appearances
Shown here is the Sunken Scroll of mission 16, Propeller-Lift Fortress. It seems to be that DJ Octavio can assume human-esque form, as Cap'n Cuttlefish can do the same.

Trivia

 * After being defeated for the first time, DJ Octavio can be seen in the world map, imprisoned in a snowglobe-like tank by Cap'n Cuttlefish.
 * If the player chooses to fight the final boss battle again, the dialogue will change into a scenario where DJ Octavio escaped from his prison and recaptured Capn' Cuttlefish.
 * If one looks closely, they can see that the massive octopus shaped bomb that's fired at the player at the end of each phase is actually wearing a pair of sunglasses.