NILS Statue

The NILS Statue is a giant statue created by a human professor 12,000 years before the events of Splatoon 2. Commander Tartar, an AI created by the same professor, attempts to use the statue as a weapon to destroy Inkopolis.

In Splatoon 2 - Octo Expansion
The NILS Statue is the map on which the final boss of the Octo Expansion, Turf War, is "battled." The player must cover the statue entirely in ink, with the help of Marina's Hyperbombs, in order to prevent it from charging, thereby preventing the extinction of the Inklings.