I think Hawlucha is an underrated threat. I've seen hardly anyone use it, but it's really good.
First of all, it gets swords dance, acrobatics, and encore, so you can do the math.
Encore + Swords Dance = One heck of an Acrobatics.
Slap a flying gem on there, and that's not all. Hawlucha also gets Unburden as an ability. So, after you use that first Acrobatics and use that flying gem, Hawlucha is almost untouchable in the speed department. Slap on High Jump Kick and you have a nearly unresisted STAB with great coverage.
Basically, the only way this fighter is going down is with priority, or Aegislash, but that's what the rest of the team is there for.