|“||Divert the enemy with weapons like Splat Bombs or the Sprinkler.
Pro tip: You can try out the weapons at Ammo Knights before you buy.
— Splatoon's official website, 
The sub weapon is a secondary weapon in Splatoon and Splatoon 2. They use up considerably more ink than a main weapon, and as such, usually serve specialized purposes limited to specific combat situations and are not often used as a main method of inking the environment.
Sub weapons are deployed by pressing the button. If the sub weapon is throwable, holding down the button will display a trajectory to help the player aim the weapon. If the sub weapon is not throwable, it will be placed on the ground.
Sub weapons consume a great deal of ink, so it may be necessary to monitor the ink supply before and after deployment of a sub weapon. When the ink supply becomes sufficient for using a sub weapon, a sound effect will play and a red light will show on the ink tank.
List of sub weapons
|Autobomb||A bomb that walks towards any nearby enemies before exploding.|
|Burst Bomb||A bomb that explodes on impact. Multiple Burst Bombs can be thrown without having to refill the ink tank. They deal less damage than other bombs; two direct hits or three indirect hits will splat an opponent, or they can be used in combination with the main weapon.|
|Curling Bomb||A bomb that travels in a straight line across the floor, leaving a trail of ink and bouncing off of walls and obstacles. It explodes after its timer expires. The maximum distance of the Curling Bomb can be shortened by holding the deployment button to 'cook' the timer before release.|
|Disruptor||A bomb that gives negative status effects to opponents. Affected enemies will suffer from reduced mobility and a reduced ink recovery rate.|
|Ink Mine||A bomb that hides in ink once planted. It deals damage to enemies that get too close. As of Splatoon 2, the Ink Mine also applies a tracking effect to its victims, letting everyone on the user's team know where the victim is.|
|Point Sensor||When thrown, this object explodes in a spherical cloud. The cloud tags enemies with a tracking effect that shows their location to everyone on the user's team.|
|Seeker||A bomb that chases a target before exploding. It leaves a trail of ink that the player can use to travel quickly.|
|Splash Wall||A barrier made of falling ink. It blocks enemy movement and enemy fire.|
|Splat Bomb||A basic bomb that explodes after a short period of time. It can be rolled or thrown. The explosion timer will only progress while the bomb is touching the ground.|
|Sprinkler||The Sprinkler continually sprays ink in a circular area around itself, in a staggering motion, until it is broken by enemy fire or the deployer gets splatted. It can be thrown onto virtually any surface.|
|Squid Beakon||A device that allows the user and their teammates to Super Jump directly to its location.|
|Suction Bomb||A bomb that can be attached to any surface. It explodes after a moderate period of time, and has a larger blast radius than the Splat Bomb.|
|Toxic Mist||A bomb that gives negative status effects to opponents. Affected enemies will suffer from reduced mobility and gradual loss of ink supply.|
Sub weapons come in sets with main weapons. These lists show which sub weapons come with each main weapon.
|Bomb Range Up||Allows bombs, Point Sensors, and Disruptors to travel farther when thrown.|
|Damage Up||Increases damage dealt by weapons.|
|Ink Saver (Sub)||Reduces the amount of ink consumed by sub weapons.|
|Sub Power Up||Improves the performance of each sub weapon in multiple ways.|
Names in other languages
|French||Arme secondaire||Secondary arms|
|Italian||Armi secondarie||Secondary weapon|
|Spanish (NOE)||Arma secundaria||Secondary weapon|
|Portuguese||Arma secundária||Secondary weapon|