Aidan is a character I want to be of real life mouse scale. I just couldn't figure out where he would live in my universe. As I mentioned in Hovering over Rodentia, I ripped a page out of Zootopia and took the Little Rodentia route by making it into something like Chinatown and making Rodentia synonyms for gated rodent communities located in parks. So Aidan now lives in a Rodentia area, I just haven't figured out if that's the same place as my fursona and other characters.
I redesign Aidan a little. I slimmed and made his ears less round. The kilt was also removed. The button I'm still debating but will likely be removed.