Kettle

Kettles are story mode mechanics in Splatoon games. They are used to enter and exit lairs in Octo Valley, Octo Canyon, and Alterna.

Description
Kettles are devices that appear similar to tea kettles. They are covered in a grate, meaning Inklings can only enter them in squid form via. They are located throughout the various zones in Octo Valley and Octo Canyon, and allow players to enter Octarian Domes. "We Octarians dwell in a world deep underground. The individual caves in which we live are connected by a network of transport devices known as kettles. Wow... You learn something new every day!"

- Sunken Scroll 2

Trivia

 * Because the events of Splatoon take place long after the extinction of humanity, relics of human history are scattered around Inkopolis. Kettles are likely based off tea kettles used by humans thousands of years in the past.
 * After a kettle's mission has been completed for the first time, stickers with squid designs in Agent 3's Ink color will appear on it.
 * In Splatoon and [Splatoon 2]], kettles are silver-colored, but in Alterna, kettles have been changed to a gold color.