It was never made available in-game. While the item was fully-functional on the disc, it could never be obtained and was eventually removed in Version 2.3.0.
The Warrior Headdress was a feather-adorned piece of headgear based of the headdresses traditionally worn and associated with Native American tribes.
The Warrior Headdress comes with Quick Super Jump as a main ability. As a 1-star item, the Warrior Headdress has one additional slot for secondary abilities. Since it is made by the Forge brand, it has a higher chance of rolling Special Duration Up and a lower chance of rolling Ink Saver (Sub) to fill its secondary ability slot.
Warrior Headdress in Cooler Heads. Usually, this is covered by some UI.
- Although it couldn't be legitimately worn by players, one can be seen as a prop in Cooler Heads (although it's usually covered by some UI).
- A UI icon for this item was discovered in the data files for Super Mario Maker. This variation has a mildly different angle and is slightly brighter than the Splatoon variation.
- It's likely the Warrior Headdress was never added to the game as to avoid possible controversy with Native American groups.
Names in other languages
Headgear in Splatoon