Turns out Nintendo released two ARMS videos today. The first video showed off the characters and their key abilities, but dodging abilities alone won't do. You need something to dodge from -- or, rather, force the opponent to dodge against.
That "something" being a whole bunch of different boxing gloves, of course. The weapons in ARMS determine your playstyle as much as the characters picked, as demonstrated in the video.
Here's a quick rundown on each type shown, though note that more might make it into the final game.
Toaster looks to be the default glove, and possibly the signature one for Spring Man. Charging it up increases its damage and guarantees a knockdown, allowing for meaty followups if it connects.
Master Mummy needs a gigantic punch to go with his gigantic frame, and the Megaton glove fits him to a tee. It's slow and unwieldy, but a charged punch not only makes it harder to dodge -- it'll even blow away weaker attacks for a deadly hit.
Ninjara's signature glove stuns on impact, leaving opponents open for a grab'n'dunk. Ideally, this means it'll be relatively weak damage on its own.
As was demonstrated in the video, not all of ARMS' stages are wide-open arenas. The one demonstrated for Boomerang appears to be a mad scientist's lab, growing spring-fighters in giant vats. The Boomerang's curving shot lets you hit the opponent hiding behind obstacles. A charged attack'll lift them up in the air and toss them to the side.
The Revolver rapid-fires three quick jabs, and can stun the target when charged for a followup combo. But seeing as how all three shots were slapped aside by Sparky, it seems hard to land.
Slapamander, demonstrated by Ribbon Girl, is akin to Boomerang, sweeping a wide area horizontally to hit. From the looks of it, a charged attack will do burning damage as well as knock the opponent prone.
Mix and Match
You're not stuck to one glove type per character, of course. Each comes with a full arsenal of options, some akin to ones found on other characters (Spring Man looks to have a missile launcher that might work similarly to Mechanica's Revolver, for example). It also means that weaknesses in one weapon type can be compensated with a leading jab of another. If your Revolver's getting jabbed out by Sparkies, see how they like trying to stop a Megaton instead!
In the hopes of making ARMS a deceptively deep game, here's hoping that there'll be a full arsenal of attack options. As the Nintendo Switch's fighting game debut, it certainly looks to be a unique brawler.