Octobot King

The Octobot King is a spherical robotic device and one of the Great Octoweapons, piloted by DJ Octavio in his boss fights. Unlike the other Great Octoweapons, it has made various appearances throughout the series and has undergone multiple unique models.

Splatoon
The original model, simply known as the Octobot King, is first fought in the mission Enter the Octobot King! of Splatoon Octo Valley. It comes equipped with Octorpedoes, disco ball-like dodecahedrons that summon enemies, a Killer Wail, two robotic fists, and a massive octopus-like bomb. Agent 3 must deflect the robotic fists and octopus bomb back at the Octobot King to damage him.

Splatoon 2
The second model is known as the Octobot King II, and is fought in the mission Tide Goes Out of Splatoon 2 Octo Canyon. It has been modified to include a stage for Callie to perform on and lots of audio amplifiers. It retains the giant fists of the original model, but now comes equipped with giant versions of Splat Bombs and Suction Bombs, takoyaki-shaped bombs that create static tornadoes, and new speakers that function similarly to a Splash Wall. In addition, the Octobot King's fists are now capable of spinning, making them immune to being inked temporarily. Similarly, Agent 4 must deflect the robotic fists back at the Octobot King.

Splatoon 3
The third model is known as the Octobot King L3.Gs and is in the mission of the same name in Splatoon 3 Return of the Mammalians. It retains its robotic fists, which are now capable of slapping and pointing. In addition to the normal and spinning punches of its previous versions, it is now also capable of slapping the ground to produce a Wave Breaker-like shockwave, similarly to an Amped Octostamp. The front speakers now double up as vents and an Ink Vac, with the most prominent feature being its ability to transform between both bipedal and flying forms.

At the end of the story, it is further modified to be capable of flying through space in its flight form, as well as use a new brushroll-styled Ink Vac, which is further equipped with a turret. DJ Octavio uses it to rescue Agent 3 from space, and teams up with the New Squidbeak Splatoon to use it to defeat Mr. Grizz in the Return of the Mammalians battle.

Trivia

 * All models of the Octobot King are loosely modelled on a disco ball.
 * The name of the Octobot King L3.Gs resembles the word LEGS, and is a joking reference to the fact that this Octobot King has legs while the prior versions do not.
 * The Octobot King and Octobot King II are powered by the Great Zapfish, but the Octobot King L3.Gs is not. This may be the in-universe explanation for why its fight (as the first boss of Splatoon 3) is less challenging than the fights with the previous two versions (as the final bosses of their respective campaigns).

Names in other languages
Octobot King

Octobot King II

Octobot King L3.Gs