First of anything, i have to say this is a different version of the normal Andrew, this version is for the story "The Grimoire". The main story of Andrew is "The Little Drawing Thief".

So, in this story Andrew is a member of a acient group fo the main rodent city, Muridia. Placed in another dimesion aside of the human world, to being safe from them.

This all was because of the dream of master Victoriano, to give the chance of the evolution to some rodents. He created them using spells of an acient old magic book. He also created their new world to keep them away from humanity and safe and when master Victoriano passed away, the rodents took the grimoire to keep making more of them, evolving more rodents and other species like rabbits and another creatures. They called themselves Muridians.

The Outcasts was another group of creatures evolved (mostly rodents and recently bats) They still lives in the human world, hidden from the eyes of humanity and living on cities built underground.

So this is a little summary of this story.
~I hope you like it! nwn)/