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I was under the impression that (If you'll take my meaning,) Swashbucklers are the kind to use single/dual cutlasses/scimitars. While Duelists are the kind to use a rapier.

3395794
I was avoiding prestige classes. Besides Duelists are the first attempt at a Swashbuckler.

Promaxncer is more a Fire Wu Jen.

I never included Shiny.

I observed RD in a martial arts gi in the show so I figured she'd be a Martial Artist.

3395761
I dunono, I'd think Spike would be more opf a Pyromancer.
Rarity'd be more of a Duelist.
Shinng Armor is 100% an Abjurer.
Caence might be a Cleric?
Points for Rainbow Dash being a martial Artist being canon.

: MLP X BESM d20/D&D 3.5e

MAGIC IS FRIENDSHIP (ENERYTHING Based on observation in the series)

• Twilight Sparkle - Student/Dynamic Soreceress.
• Spike - Adventurer.
• Pinkie Pie -  Bard.
• Maud Pie - Adventuress.
• Mud Brier - Adventurer.
• AppleJack - Barbarian.
• Granny Smith - Adventruress (Ret).
• Big “Mac” Macintosh - Barbarian.
• Apple Bloom¹ - Tech Genius.
• Rainbow Dash - Ninja/Martial artist.
• Rarity - Swashbuckler (Fighter/Rogue).
• Sweetie Belle¹ - Bard.
• Fluttershy - Druid.
• Angel Bunny - animal companion.
• Harry bear.- animal companion.
• Yona.- Barbarian.
• Zecorra - Druid.
• Ocellus - Shape shifter.
• Sandbar - Fighter.
• Gallus - Fighter.
• Celestia - Paladin.
• Luna - Paladin.
• Scootaloo¹²- Ninja/Martial artist.
• Mr Carrot Cake - Expert (baker).
• Mrs Cup Cake - Expert (Baker).
• Pound Cake - commoner.
• Pumpkin Cake - commoner

MAKE YOUR MARK (Based on observation in the series)

1. Sunny Starscout - Aventueress.
2. Zip - Ninja.
3. Pip - tech genius
4. Hitch - Samurai.
5. Misty³ - Dynamic Soreceress.
6. Izzy Moonbow - bard.
7. Alphabitle Blosomforth - Bard

¹ Cutie Mark Crusader.
² Rainbow Dash fangirl
³Called Misty's turning on Opalescent.

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I know of no other way to live.