Brella
From Inkipedia, the Splatoon wiki
Brellas are a Main Weapon type introduced in Splatoon 2. Brellas fire a single cluster of bullets each time the trigger is pulled. If the player holds down the trigger, the brella will unfold, providing a protective shield that will absorb enemy attacks. The shield can be broken if enough ink is fired at it. If the player holds down the trigger even longer, the brella will detach from the main weapon, and propel itself in the direction it is aimed.
List of Brellas
Brellas/List of Brellas in Splatoon 2