It is thought to be on the SOI server, but they may have changed that
The reason for that I think was because in one episode im pretty sure it had a cutscene where it showed an army of tinmen so they needed to use them
For the record, the episode that showed Israphel with an army of Tinmen used CGI to depict that scene, so no modification of Minecraft assets would have been necessary.
Erm... what does this have to do with the thread?