An earth pony and his griffon best friend set out with Twilight Sparkle to study other cultures and how to forge bonds of friendship with them. Things rarely go to plan though, and sometimes comically wrong. Then Chrysalis changes everything.
Zevan was a loyal changeling and did his queen's bidding, although he questioned why she had broken the peace. After being badly injured though, he had to reconsider his future, and a unicorn mare with a broken horn was a surprising part of it.
Dandelion is Cogs' firstborn daughter, and a joy to him and his wife. As a changeling though, Cogs had no experience with raising pony foals, so when a crisis arises, he often has to wing it. Sometimes the solutions are more creative than others
Long before Whirring Cogs met Lavender Dreams, he had been a happy, single stallion at the Cloudsdale weather factory. Then a mad changeling queen destroyed his ideal world. (Prequel to "Change of Life")