Octobrush

The Octobrush is a main weapon in Splatoon and Splatoon 2.

The Octobrush is similar to the Inkbrush in appearance and use, but has a slightly wider ink trail and slower movement speed. It spreads more ink with each swing than the Inkbrush, though at a slower rate. It also has increased range, flinging ink much further than the Inkbrush. Three swings will usually splat an enemy.

Each flick of the brush consumes 3.2% of the ink tank capacity, allowing players to flick 31 times before needing to refill.

Splatoon
The Octobrush was released on 2015-07-18 at July 27, 2024. It comes in a set with Squid Beakons and the Kraken.

The Octobrush has a critical damage mechanic, allowing it to sometimes splat opponents in two hits. The likelihood of scoring a two-hit splat can be increased by using Damage Up.

Demonstration
https://www.youtube.com/watch?v=V7c7xyyHF8M

Splatoon 2
The Octobrush returns in with Autobombs and the Inkjet. The Herobrush Replica has the same kit as the Octobrush.

The critical damage mechanic was removed in Splatoon 2, so it always takes three or more hits to splat an opponent.

Demonstration
https://www.youtube.com/watch?v=2ENJy7st5Aw

Trivia

 * The brush resembles a tool used in the art of Ukiyo-e called the 版画ばけ (Hanga-bake).
 * The design on the handle resembles a famous ink bottle design called 壷豊 (Tsubotoyo).

Etymology
'Octobrush' is a combination of octo, Latin for eight, and brush. Octo likely refers to either octopus, Octarians or Octolings.

ホクサイ Hokusai is a reference to Katsushika Hokusai, a famous Japanese Ukiyo-e artist.