'Dr. Manehattan' Twilight Sparkle

The day Twilight Sparkle stopped being a librarian and became a physicist started her on a path to change the world... And become Dr. Manehattan, capable of melting carriages and teleporting. Almost overnight, Equestria advanced out of their charmingly rustic 1300s-style feudal society and into a world of airships... wait, they already have those... and teleporta... uh... well, it was cool that she could grow to the size of sugarcube corner.