I used data that someone else posted:
I'll attach his file again as I don't think it's included in the quote. You'll have to change the file extension to .json again.
Then make a new save.json in your game that you can fiddle around with so you don't risk losing your own monster data by effing up.
Open your new .json with Notepad++. Other programs might work as well, I just know that my basic Windows Editor didn't.
[EDIT: I mean I could open the file, but editing it actually corrupted it and made it unworkable for the game.] Get a look at what's written there, it's basically a list of your monsters.
Each individual's monster data block begins like this:
{"itemName":"Duke", where in this case the monster would be named Duke. Get a look at the data to get an impression of where one monster's data block ends and the next begins.
Then, open the attached Team52.json and look for a character named Koga (
{"itemName":"Koga","id":0,"itemType":15, ...). That is the bunny character, as you can see, bunny
itemType is 15. Just copy her whole data block and either paste it into your own file between two of your monsters or mark and overwrite one of your existing ones.
That's basically it, I still had some problems I can't remember or recreate now though, you may have to fiddle around a bit. I think initially I just changed one of my monsters'
itemType to 15 which didn't work because different monster types may have different types of assets. So I think you have to copy the whole monster data block from Team52. Or maybe it was actually the other way around and after that didn't work, I was successful by just changing one of my own monsters'
itemType. Sorry, I really don't know anymore, all I remember is that I had to try around for a while. Hope it still helps, good luck.