You guys need to remember, in the games lore, all these spirits were toys to begin with, but their bodys have been lost. It makes sense that some of them would gain their bodys back via dlc. I think it would be quite touching to see a spirit gain its body back and become a fighter. Thats all these spirits want to do. heck, what if almost all the DLC characters are already spirits in the game?
And since they are toys, who's to say there cannot be duplicates along with their spirits?
So now I'm gonna list my Shantae spirit/fighter combos I promised earlier today:
Sky: Yoshi, uses up special a lot along with Poke Balls that summon bird-like Pokemon
Bolo: Someone beat me to this, but yeah. Richter who trips a lot and is stunned by female assists.
Rottytops: Ridley. Uses forward tilt a lot. Stamina battle, but Ridley revives if not pushed offstage quickly, and speed is increased.
Risky Boots: Wolf. Uses his specials more, also has a Killing Edge.
Techno Baron: King K. Rool. He is tiny and flees from battle, but is accompanied by a giant Palutena.
Ammo Baron: Bowser. Has an infinitely spawning team of small Bowsers, all have permanent jetpacks. The main one just hovers behind his team while they attack.
Squid Baron: King Dedede. Alternates between using up special and dash attack. Food spawns periodically
Holly: Pokemon Trainer (Leaf). Uses a giant Ivysaur. Explosive items only.
Dagron: Ridley (again). Giant and jumps high in the air before descending to attack, then flies up again.
Warrior guy: Simon. Black silhouette and giant, but only uses moves involving punches and kicks.