Megasquid 8000: you get to ride a huge mech, with all sorts of weapons at your disposal (like ink missiles), you get the ability to fly for short periods of time and the thing explodes when it runs out, killing everything in a small radius.(unfortunately, this includes the user. had to think of a way to not make this super OP.)
Inkstorm: a storm forms and ink falls like rain around you for some time, painting everything around you and splatting any enemies who get nearby.
Ancient tactics: you fire a blast of black ink at the enemy, blinding and paralyzing them for some time. you can also choose whether this causes knockback or not by pressing the R stick and R button simultaneously.
Kamikaze squid: you get a huge bomb equipped. when you get splatted, the bomb falls down and explodes in a wide area.
Dual wield: pretty self-explanatory. hold 2 weapons simultaneously for a limited amount of time.
Dark squid: a shadow version of your inkling appears and hunts down an enemy player. it is extremely hard to kill and very fast.
Chaos bomb: your opponent completely loses control over their actions. they now wildly jump around, squidbag and shoot in all directions, except at the enemy.
Supercharge: charges all of your teammates´s special weapons, but you are exposed while using it since you sit down, take out a small computer and have to wait 5 seconds before it activates.
Jellyfish army: a huge amount of jellyfish storm the battlefield, zipping around the enemies and blocking their shots.