Celest and Stratea are actually sisters. They both had the same mother but different creature fathers. Professor wanted to see if they could create and antropomorphic mythical creature, but they first had to test it with normal creatures. That is how Celest came to be. They made an antropomorphic fox. Thusly she is also the older sister. When they were both older Celest and Stratea broke out of the laboritories and became refugees. Because of their build they quickly determined that they made excellent thieves. That is also then how they started to make their living. Unfortunately most people shun them so they mostly come out at night. One night they broke into a magicians house and was accidentally transported to the past. Their unfortune quickly turned into a lucky strike. They had been transported to the age of dragons and al other mythical creatures so they quicly fitted in with humans and the creatures. They were also appointed as ambassadors between the creatures and the humans. But they couldn't quite give up their thieving ways and sometimes they would still work together for the thrill of it.