Quick little action doodles because I'm experimenting with how Tadashi fights in darkpath au and armordashi au, and also because people were asking about how they fight. He's actually quite different in each - his darkpath version is more of a messy street fighter, a mix of martial arts, boxing, and kickboxing. Though oddly, he prefers to kick things rather than punch them, probably because he's afraid he'll actually seriously hurt someone with his gauntlets. They're pretty powerful, though the shotgun rounds they can fire off only serve to knock things back - they explode on impact, rather than pierce. His gauntlets also seem to be on fire sometimes, but only for brief periods.
Armordashi is a little different, since he wears heavy armor and has to keep a good eye on his leg braces (paralyzed from the waist down, don't forget). Tadashi is much more defensive here, opting for a 'pick heavy things up and throw them', 'use shields for pure defensive strategies', and 'punt things'. Since he has to keep a watchful eye on Hiro the entire time (as well as the rest of the team), he serves the role of the wall of steel guardian, with a bit of a medic thrown in thanks to Baymax communicating through his helmet and helping him apply proper dressings to injuries with the antiseptic built into his suit's hands.
TL;DR: Darkpath is a rogue, Armordashi is a tank - both have a love for kicking people in the face for whatever weird reason. Added bonus, darkpath Dashi can also shoot off flare rounds from his gauntlets when he needs someone to find him: