I love how everypony is supposed to be swords, but fluttershy is a butterfly knife

It rock if Rainbow and Flurtershy use dao swords, those scimitars from China. One sword which fits Rarity be a jian since it’s the Gentleman of Weapons from China. It also rock if Rainbow and Flurtershy also use kukri knives as Gurkhas from Nepal do.

Twilight Sparkle:
“Okay, now I’m ready!”
“(ahem)”
“I can cut anything at all with my enchanted blade!”

Rarity as an arabian sword, I can see a genie Rarity wielding it.

My personal sword would be the Executioner’s Great Sword
 

twilight sparkle needs to read a book on sword making, that blade has no room for the handle.
 
also, love that pinkie has jet’s sword from avatar: the last airbender.

They would hunt vampires?

@Whoisthisman  
The ridiculously high quality medieval Viking sword. The technique required for that sword was 800 years ahead of most European sword forging at that time.

@Whatevs  
You mean an ulfberht sword?

RD And Rarity need to switch, a cuped Rapier would suit Rarity so well.

also, rarity would work better as a katana seeing as how large amounts of grace, poise, and precision go into using one correctly (as well as katana being less blade-heavy.) rainbow dash as a rapier works well, but I’m fairly certain the handle of that one isn’t drawn correctly, and the guard’s design causes loss of structural integrity.
 
also, twilight would probably be this because she would go for whatever blade could cram as many uses into it as possible; assuming it would be the most efficient.

Pix3M, remember that Rapiers used to be practical.

fluttershy would be better served being a sai: a blade traditionally used mainly for parrying your opponent’s attacks, and often used more for self defense in lethal combat.

I am all for Rarity being a rapier. High class ponies for a high class sport, I suppose!

A Tanto or a Kaiken for Fluttershy would also work
 
http://en.wikipedia.org/wiki/Kaiken_%28dagger%29

Pinkie’s looks like a keyblade.

@Background Pony  
Perfect.

What should Lightning Dust, Trixie, Blueblood, Discord, Chrysalis, Celestia, and Luna be?

Dash should be a katana, and Rarity should be a rapier.

@byakhee_pony  
G’Night

If it weren’t next to useless in a fight, I’d say Twilight would be a Swiss Army Knife.

Incoming DLC weapons for Metal Gear Rising…

Applejack: Generic Hero Sword  
Pinkie Pie: Hook Sword from “Guy Savage”.  
Rainbow Dash: Epic Longsword  
Fluttershy: CQC Army Knife  
Rarity: Buccaneer (Pirate) Sword  
Twilight Sparkle: Unfinished blade (not funny guys…)

@byakhee_pony  
G’night.

@every one.  
thanks for the discussion now good night.