oh rie how could suggest new things can do with out explaining them? that the idea of the thread. octolings are the octarian counterparts of the inklings and function identically to them hence why most think of them as echoes. however as weve learned echoes are more about body shape than any thing as we have echoes who while they play the same in the game as the character they echo but have ended up with a moveset based on games they werent in (daisy) and echoes who have many unique things they can do in their game completely ignored (dark samus) in short theres no way of predicting how it would go.
now for the sake of argument lets talk about the weapons the ocotling can use untouched by the inkling. the dualies are the signature new weapon of splatoon 2 with their unique feature of being able to dodge, something we already do in smash. the charger is your standard sniping affair favoured by campers (and other such evil beings) and very useless in salmon run, would probably work like the staff item. the splatling is a gatling gun that works similarly to the charger and is just as useless in salmon run. im not bitter. and my favourite of the bunch the splatbrella a gun like an umbrella that will hold up a shiled should you hold the button, hold it long enough the shield will fire. a weapon i thought would translate quite well into a smash item.
splatoon 3 is of course giving us new weapon types, such as that bow like gun and the crab tank (which might be a special) but until its out i cant say to much.
now sub weapons. the inkling only uses the most basic of these leaving the octoling to be able to use many others. the burst bomb is fairly standard and is for lighter faster attacks. there are the ink mines, self explanatory. there are curling bombs which run along the game and bounce off walls, not something thatd work to well in smash. seekers which are homing weapons that also run along the ground and the auto bomb which is a walking homing. theres the suction bomb which sticks to surfaces. the sprinkler which sprays ink and might work better as an item. the fizzy bomb which bounces before exploding. the toxic mist which leaves some miasma in the place it landed. the splash wall which is more of an obstacle than weapon and the torpedo the floating homer.
right special weapons aka potential final smashes. tetna missiles that lock onto enemies and fire a number of missiles directly at them, see snake's old FS. splashdown, leap into air strike the ground with a burst attack, pretty basic. baller, roll around in a ball running over people and ending with a large explosion, probably a bit slow for the faster pace of ultimate. stingray, and concentrated laser that goes through walls and easy to avoid, basically a narrower version of inklings FS. ink storm, send a cloud dropping ink over the stage, would require some artistic licence to work as a FS. the bubbler which is a forcefield, not much of a FS. bubble blower, throws a few bubbles which will explode when shot enough. booya bomb, an explosive thats gets stronger by pressing the booya button, would be easy to make in smash. the ultra stamp, see the hammer item. bomb launcher, speaks for itself. ink armor, increases defence would be much of a FS. inkjet, take to the air and launch a bazooka at people, see diddy's FS. leaving out the splatoon 1 stuff.
theres some new ones in splatoon 3. killer wail 5.1, 6 smaller sound lasers as opposed to the single large one the inkling has. trizooka, a bazooka that shoots three blasts at once. zipcaster, turns the user into a state between humanoid and cephalopod and can stretch their arms to latch onto walls, no idea how thatll work in smash.