If you are meaning making your own desktop pet, yeah! I made Byte with Godot and eventually plan to do a technical write up in the (FAR) future on how I did it, but my basis was off of this tutorial here for multi-windows. It takes a bit of work, but I highly recommend the process.
If you are wanting to draw or write fan stuff about Byte I believe Cindesh will have no issue with that lol. She can correct me if I'm wrong
In the future, I do want to allow modding but I have a few technical things I need to jump to allow that.