Indie All-Stars Fighting Game

Why him?  He's the star of the most widely acclaimed indie game of this generation!  Plus he's got a spade ready-made for bashing.  There's not a crowd hoping for him to be in Smash for nothing, you know.

How would he fight?  On the heavy-power side, but more floaty than you might expect.  Lots of emphasis of bopping people on the head with his pogo move.  Like Yoshimitsu.

Special moves would be relics mostly.  The game's Final Smash equivalent would have Shield Knight joining him for a tag-team attack.

Why him? Star of the greatest Indie Game ever. Plus look at the guy, he's adorable

How would he fight? Shit, I've not thought this through. He's not much of a fighter. He'd be fast, light and great at jumping. I picture him punching like Jigglypuff does in Smash.

Maybe his final smash he transforms to ultra fighting form:

Why!? Quite a versatile moveset, from explosions, to energy bolts coupled with agility and hops. I imagine Ori would play a lot like Pikachu actually, a few quick weak moves and a couple of annoying B attacks and powerful charges.

Special Move Well, the best sequences from the game are the breathtaking escapes Ori makes from waterfalls, volcanoes etc. So something similar to Olimar's smash could work. Alternatively some sort of team smash like Duck Hunt Duo or Mega Man involving some of the great side characters from the game

Why?
Since he can switch from being sticky, slick, solid & expand he could be a very versatile fighter by being both quick and a heavy type.

Special

Expands in size & becomes super sticky so you can ensnare other fighters then jumps high up to drop said fighters below him then crushes them in his solid form. (like Kirby's down B but more devastating)

Why? Because she's good in combat with her sword

Special Move: Slows down the game that allows you to attack and do several at a time

Why him? Guacamelee appeared on pretty much every current-gen. console and was praised on all of them. Its hero is a brawler. Need I say more?

How would he fight? I'm thinking Zangief-style burly wrestler-grappler, with special moves lifted directly from the game. Hopping over into the world of the dead for a sneak attack wouldn't be a bad idea either.

Why her?  She's always ready for combat and a number of alternate costumes have already been developed for the upcoming Half Genie Hero. Plus, y'know, fanservice. And that.

How would she fight?  Light fighter, mereckons, with lots of moves from her heritage: the hair flick must be in there, alongside some transformations (though only the elephant and harpy (fly back recovery) really lend themselves well to a fighting game like this - monkey and mermaid? No thanks) and perhaps the Flintlock Pistol from Pirate's Curse as a projectile weapon.

Her Final Smash equivalent would have to be some exceedingly destructive belly dancing.

Why?
The main star of probably one of the most important indie games out there & it wouldn't feel right not having him in there.

How would he fight?
A ranged fighter. Use his various guns for attacking and evading, a special attack would have to be a super charged combo shot with Curly Brace.  

Why? Star of one of the biggest indie games around, and just think of the possibilities! Isaac has a colossal pool of moves to choose from, meaning he's got a versatile moveset.

How would he fight? Think Mega Man, but with a lot more going on. Isaac would use his tears as his basic fighting tools, but his biggest boon would be his neutral-B special move, the D6. The D6 would randomise his other three special moves (presuming we're going off a Smash style moveset) from a pool of some of Isaac's more memorable items. Ipacac bombs? Mom's Knife projectiles? Brimstone beams? Or perhaps you'll be stuck with Lemon Mishap and Soy Milk. To make him a bit more balanced, the D6 should have a meaty cooldown before using it again, otherwise you could spam it and end up with an OP moveset. Final Smash could be the other playable characters flying in for a beatdown on Isaac's foes.

Why him? Because I feel like there's nobody else that's not already been mentioned, with the exception of one of the birds from Chasing Aurora, which is a real IM_HERON of a game.

How would him fight?. Crepé.

Why? From one of the games that made XBLA so good

How would he fight: Has a Gun and a Sword along with other weapons I'm thinking Link clone.

Why her?  Always equipped with a powerful projectile weapon but never having it as the focus of gameplay. Plus, y'know, fanservice. And that.

How would she fight?  Another lighter fighter, with the emphasis heavily on projectiles. You'd have to switch (sorry) between the pistol and the fire hose to fully utilise her history, of course, but Mario has his fireballs and F.L.U.D.D.... so why not? Her Final Smash equivalent would be lots of the classic MSF! blocks appearing/disappearing and ramming opponents into the camera (much as happens in Smash anyway!).

Why him?  It wouldn't really be an indie fighting game without the indie protagonist, would it?  How he fights is a bit more difficult to imagine, but not including this chap would be like Smash Bros. without Mario.

How would he fight?  Er.  You can't really fiddle about with time in a multiplayer fighting game, can you?  Apart from his Final Smash Indie Attack, which imagine slows everyone down.  So, basic hitting people moves, I guess, including ones that freeze people's movements briefly for combo potential.

Why them?They need a good kicking.

How would they fight?They wouldn't, because they are pointless, just like their game.

Why her: Because Knytt Underground is an indie game I like. What?
How would she fight? She'd be Olimar-esque as, from her own personal skillset, there's nothing there - she can run, jump, and climb. However, she can transform into Bob for Sonic-esque bounce attackes (which, of course, you all knew), and, if the magic spell thingies can be brought to her (if we can bend the rules of the original game a bit), then electric projectiles can happen. Also, if the game would have some kins of V-Trigger/Final Smash element, you've got Dora and Celia's barbed-wit conversation attack. Actually, I'm quite pleased with myself

Why her? WORTH 66P! And no reviews on the eShop yet, so it must be good.

How would she fight? In typical "Adventure, Education, Other" style (nintendo.co.uk's words, sadly not mine).

we've got Tim.

How she'd fight She'd batter people with her inexplicable guitar, and otherwise have the advantage of being a real human fighting little chibi sprite characters.
Final smash
Yeah, this needs another spoiler...

For her final smash, her opponent gets their throat cut with a piece of broken mirror by, depending on your interpretation, either her secret twin or her alternate personality.