Just a fun thing I thought of, if MLP characters were Cybertronian, what would they transform into? You don't have to stick with main characters, you can use secondary or background characters, pony and non pony.
For example:
Pinkie: BM-21 Grad
Mostly because arming her erratic nature with a salvo of rapid fire missiles would be frigging sweet.

However, if anyone suggest that "Dr. Whooves" turns into a TARDIS, I will slap you.

786454 Rainbow Dash would definitely be an F-22 Raptor, or an F-35 Lightning II.

Twilight Sparkle is a TIV. Because that is easily the most scientific vehicle ever.

Time Turner would definitely become a TARDIS.

Please note that I didn't say Dr. Whooves!

Big Macintosh

786471 Both are good choices.

786472 Clever.

786482 You win this round.

787413 What is that exactly?

Fluttershy

Fancypants

The Doctor

and Lyra

786454>>786471>>786472>>786482>>787413>>787745
Applejack

Rarity

Nightmare Moon

The Sea ponies (4 different types of vehicles):

(for the sea ponies that stay under water mostly, octoponies and eel ponies)

(for the seahorse ponies)

(for the hippocampi ponies)

(for the older hippocampi ponies)

WonderBolts as F-22 raptors

Applejack as a GMC topkick

787413nice!!!!!!!