Joy-Con

The s are the main controllers of the Nintendo Switch that can be used in Splatoon 2.

Description
The s are the main controllers for the Switch, and two are included with every Switch, with extra's sold separately. They are small controllers, that can be slotted into both sides of the Switch Console to form the Gamepad esque Handheld mode, slotted into a Joy-Con Grip to form a more conventional controller, or used separately such as one in each hand, or as a controller each for multiplayer games. They s include SL and SR triggers, HD Rumble, and motion controls, and the (R) contains an IR camera and NFC pad. The is replaced by directional buttons, to help 2 player modes.

Joy-Con Grip
The Joy-Con Grip is an accessory included with every Nintendo Switch that forms a more conventional controller. The player slots the Joy-Cons into either side of the Grip. The Grip does not add any more features. The Joy-Con Charging Grip is separate accessory that charges the while using it, and has a translucent plastic backing rather than the matte style plastic used in the regular grip.

(L)

 * : The stick is used primarily to move the player's Inkling forward, backward, left, and right.
 * : The button allows players to transform into squids. In this form, Inklings are able to move faster through their own ink and jump farther.
 * Directional Buttons: Up and down on the Directional buttons is used for Signals. On the map screen, holding while pressing Left, Right or Up on the   Super Jumps to a specific Player and Down super jumps to the Spawn Point.

(R)

 * Motion controls: By tilting the up, down, left, and right, players are able to change their Inkling's view and aim, and to move the cursor to Super Jump.
 * : The stick, on the other hand, is used for more precise aiming, and controls which direction the player looks. Clicking it in will activates the players Special Weapon. The  stick is used a lot in menus.
 * : The button allows players to splatter ink using a variety of weapons. In Inkopolis Plaza, this button is used to zoom in on specific landmarks.
 * : The button allows players to use a variety of sub weapons. These have various effects which range from allowing teammates to Super Jump to one's current location at any time, to a robot that tracks and tries to splat nearby opponents.
 * : The button is used in menus to select specific actions and options.
 * : The button causes the player's Inkling to jump button and is used in some menus to exit the current selection or action.
 * : The button is used to bring up the map.
 * : The button resets the camera angle, allowing for quick corrections. This feature is most commonly used alongside motion controls.
 * NFC Pad: Used for reading amiibo.

Splatoon themed Joy-Cons
Nintendo announced new Splatoon 2 themed Joy-Con colors soon after the ARMS Direct, Neon Green (L) and Neon Pink  (R), along with other Splatoon 2 themed accessories including a Splatoon 2 themed Switch Pro Controller. They are sold together, or in a bundle with a Nintendo Switch and Splatoon 2 in Japan. They will be released in the Fall, but release has not yet been confirmed for North America or Australia.