Cozy came to Ponyville to start learning from Sunset. First, they would communicate with letters, but then Cozy moved to Ponyville. The filly is quite arrogant, aggressive and flashy. The only pony to which he has some kind of respect is Sunset. In the future, he wants to rule Equestria at her side, and when he grows up he wants to take over Canterlot, becoming an empress of magic.
He wants to prove that not only unicorns can achieve some successes in magic, but also pegasus.
Thank you
(by Google translation)