In this AU, The CMC is made up of Rumble, Babs Seed and Diamond Tiara.

Rumble lives with his older brother, Thunderlane and Thunderlane's boyfriend, Soarin'. He greatly admires both of them but is a bit of a clumsy flyer. He hopes that he'll be able to better control his flying by the time he can become a wonderbolt.

In this AU, Babs Seed is the younger sister of Gloriosa Daisy(she has a plant based name and is a redeemed antagonist in the main continuity) and helps out at the nature reserve. When she's not working there or hanging out with her friends, she's learning how to be a hairdresser.

In this AU, Diamond Tiara is Vignette Valencia's little sister and the one that started the CMC. As she spent more and more time with her friends, Diamond realized that she was a natural leader. She got her confidence from her older sister and it helped her a lot when she was once bullied for being a "blank flank" in school.

Their cutie marks are obviously based on the main CMC's but with their own little details.

Rumble: Inside his is a wing to represent his love of flight and the "thunderbolt" is meant to also resemble a crack to represent his resilence. He's gotten busted up and cracked from all his attempts to be a better flyer but that's only made him stronger.

Babs Seed: She has a flower to represent her family and love of nature with a pair of scissors to represent her creativity with hair and crafts. She also has the sharpest wit of the three and it shows with that mark as well.

Diamond Tiara: She has a diamond to show her strength and confidence to shine, even if she's a little broken. The crown is to show her leadership skills.