The Unity Six is Sunny Starscout, Hitch Trailblazer, Pipp Petals, Zipp Storm, Izzy Moonbow, and Misty Brightdawn. Like the Mane Six, they are the current heroes of the now Equestria.

Sunny Starscout - Twilight Sparkle

HItch Trailblazer- Applejack

Izzy Moonbow - Pinkie Pie

Zipp Storm - Rainbow Dash

Misty Brightdawn - Fluttershy

Pipp Petals - Rarity